--- title: "styrofoam half sphere — Niche Verdict: Skip it (48/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/arts-crafts-sewing/styrofoam-half-sphere" last_updated: "2026-07-10T01:29:31.881Z" locale: en meta: description: "a small market ($33K/yr) — styrofoam half sphere doesn't clear our bar today." "og:description": "a small market ($33K/yr) — styrofoam half sphere doesn't clear our bar today." "og:title": "styrofoam half sphere — Niche Verdict: Skip it (48/100) | Amazon United States - Flapen" --- Back to Flapen home # **styrofoam half sphere** **Skip it****48/100 ** a small market ($33K/yr) — styrofoam half sphere doesn't clear our bar today. **Market/yr** **$33K** **Growth (1y)** **+151.2%** **Products** **43** **Brands** **24** was 21 a year ago **Sellers** **41** **Price range** **$6.70–$27.50** **Returns** **4.2%** **Rating** **4.5★** **Skip it** Scored 48/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **2** ×0.30 Growth **71** ×0.30 Competition **75** ×0.20 Quality gap **45** ×0.10 Returns **67** ×0.10 ## **Demand** Weekly Amazon search volume, last 36 weeks — +151.2% year over year. 2K1KSpike '26Nov '25Dec '25Jan '26Mar '26Apr '26May '26 ## **Competition** - Crafjie44% - FloraCraft13% - AHKUNMT9% - vibedor5% - Evershine4% - GCVOPTON4% - Other (18 brands)22% Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen. 24 brands and 41 sellers compete here. **Brands** **24 **▲rising was 21 a year ago **Sellers** **41** **Top 5 brand share** **74%** #ProductBrandPriceRatingReviewsClick shareTrend 1 ![Crafjie 8PCS 4 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31cH0Q3u+ML.jpg) [**Crafjie 8PCS 4 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration**](https://www.amazon.com/dp/B0CBJLR4R6) Crafjie$10.844.4★39011%—flat 2 ![FloraCraft CraftFM Half Ball 2.8 x 5.8 Inch White](https://m.media-amazon.com/images/I/41UdnqZ4zoL.jpg) [**FloraCraft CraftFM Half Ball 2.8 x 5.8 Inch White**](https://www.amazon.com/dp/B07F6T961D) FloraCraft$8.444.4★1879%▼falling 3 ![Crafjie 2PCS 8 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31njb6ykPkL.jpg) [**Crafjie 2PCS 8 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration**](https://www.amazon.com/dp/B0C77FBZ8R) Crafjie$15.634.7★3717%▼falling 4 ![Crafjie 4PCS 6 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31VfwNasiUL.jpg) [**Crafjie 4PCS 6 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration**](https://www.amazon.com/dp/B0CSLF29RJ) Crafjie$15.754.7★3717%▲rising 5 ![vibedor 12 PCS 3 Inch Half Foam Balls White Styrofoam Balls Dry Foam Half Ball Small Styrofoam Balls for Christmas Thanksgiving Day and Festival for DIY Projects Home Craft Projects](https://m.media-amazon.com/images/I/31SAKAeZrsL.jpg) [**vibedor 12 PCS 3 Inch Half Foam Balls White Styrofoam Balls Dry Foam Half Ball Small Styrofoam Balls for Christmas Thanksgiving Day and Festival for DIY Projects Home Craft Projects**](https://www.amazon.com/dp/B0DMW5B5N2) vibedor$8.594.4★835%▲rising 6 ![Crafjie 4PCS 8 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31VfwNasiUL.jpg) [**Crafjie 4PCS 8 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration**](https://www.amazon.com/dp/B0C77JJ19N) Crafjie$22.904.7★3714%▲rising 7 ![2 Pcs Floral Foam Half Balls 7.5W x 3.7H Half Round Green Dry & Wet Flower Foam for Fresh or Artificial Flower Arrangements Florist Foam for Craft Supplies Wedding Birthdays Home Decor](https://m.media-amazon.com/images/I/41laMuF7KUL.jpg) [**2 Pcs Floral Foam Half Balls 7.5W x 3.7H Half Round Green Dry & Wet Flower Foam for Fresh or Artificial Flower Arrangements Florist Foam for Craft Supplies Wedding Birthdays Home Decor**](https://www.amazon.com/dp/B0DBH31G3Y) GCVOPTON$16.784.5★2294%▲rising 8 ![Crafjie 24PCS 3 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31RM6W9BEGL.jpg) [**Crafjie 24PCS 3 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration**](https://www.amazon.com/dp/B0D3CHJ8JM) Crafjie$16.384.4★3904%▼falling 9 ![Yalumo Half Foam Balls for Crafts 10 Pack Multi-Size Smooth Polystyrene Half Round Foam Craft Ball for Floral Arrangements Wedding School Projects DIY Ornaments Holiday Decor (6 4 3)](https://m.media-amazon.com/images/I/31u+1U5-A0L.jpg) [**Yalumo Half Foam Balls for Crafts 10 Pack Multi-Size Smooth Polystyrene Half Round Foam Craft Ball for Floral Arrangements Wedding School Projects DIY Ornaments Holiday Decor (6 4 3)**](https://www.amazon.com/dp/B0FXX1GYK8) Yalumo$15.704.3★193%▲rising 10 ![Crafjie 22PCS 2 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/310BKyEkbsL.jpg) [**Crafjie 22PCS 2 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration**](https://www.amazon.com/dp/B0C1H9PQ2T) Crafjie$7.714.4★3903%▲rising 11 ![Crafjie 10PCS 3 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/21KDrZN4taL.jpg) [**Crafjie 10PCS 3 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration**](https://www.amazon.com/dp/B0D3CGXM69) Crafjie$8.554.4★3903%▲rising 12 ![Large Styrofoam Half Balls 8 Inch 2PC White Foam Balls for Crafts Giant Foam Balls Smooth Solid Round Balls for Arts and Craft Project as Christmas DIY Ornaments (Styrofoam Half Balls 8in-2pc)](https://m.media-amazon.com/images/I/31n0dJiNQSL.jpg) [**Large Styrofoam Half Balls 8 Inch 2PC White Foam Balls for Crafts Giant Foam Balls Smooth Solid Round Balls for Arts and Craft Project as Christmas DIY Ornaments (Styrofoam Half Balls 8in-2pc)**](https://www.amazon.com/dp/B0DQ533LD4) RETOONGKING$15.174.5★653%▲rising 13 ![Styrofoam Half Balls 8 Inch 2PC Large White Half Foam Balls for Crafts DIY Craft Giant Foam Balls for Home and School Smooth Solid Round Balls (Half styrofoam-8in-2pc)](https://m.media-amazon.com/images/I/31UrQ0509BL.jpg) [**Styrofoam Half Balls 8 Inch 2PC Large White Half Foam Balls for Crafts DIY Craft Giant Foam Balls for Home and School Smooth Solid Round Balls (Half styrofoam-8in-2pc)**](https://www.amazon.com/dp/B0CSF9QMWJ) AHKUNMT$15.854.5★4083%▼falling 14 ![FloraCraft Floral Desert DryFM Half Ball 3.8 Inch x 7.8 Inch Green](https://m.media-amazon.com/images/I/418X80ntpTL.jpg) [**FloraCraft Floral Desert DryFM Half Ball 3.8 Inch x 7.8 Inch Green**](https://www.amazon.com/dp/B002PNRYL8) FloraCraft$7.514.5★1,5632%▼falling 15 ![Styrofoam Half Balls 10 Inch 1PC Large White Half Foam Balls for Crafts DIY Craft Giant Foam Balls for Home and School Smooth Solid Round Balls (Half styrofoam-10in-1pc)](https://m.media-amazon.com/images/I/31BtoaeqlML.jpg) [**Styrofoam Half Balls 10 Inch 1PC Large White Half Foam Balls for Crafts DIY Craft Giant Foam Balls for Home and School Smooth Solid Round Balls (Half styrofoam-10in-1pc)**](https://www.amazon.com/dp/B0DRF97XQJ) AHKUNMT$16.954.5★4082%▲rising **~~Showing 15 of 43 — show all ~~** ## **Product shelf** All 43 tracked products in this niche. Top sellersNewestTrending [![Crafjie 8PCS 4 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31cH0Q3u+ML.jpg)**Crafjie 8PCS 4 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration** Crafjie**$10.84**4.4★390 reviews](https://www.amazon.com/dp/B0CBJLR4R6) [![FloraCraft CraftFM Half Ball 2.8 x 5.8 Inch White](https://m.media-amazon.com/images/I/41UdnqZ4zoL.jpg)**FloraCraft CraftFM Half Ball 2.8 x 5.8 Inch White** FloraCraft**$8.44**4.4★187 reviews](https://www.amazon.com/dp/B07F6T961D) [![Crafjie 2PCS 8 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31njb6ykPkL.jpg)**Crafjie 2PCS 8 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration** Crafjie**$15.63**4.7★371 reviews](https://www.amazon.com/dp/B0C77FBZ8R) [![Crafjie 4PCS 6 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31VfwNasiUL.jpg)**Crafjie 4PCS 6 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration** Crafjie**$15.75**4.7★371 reviews](https://www.amazon.com/dp/B0CSLF29RJ) [![vibedor 12 PCS 3 Inch Half Foam Balls White Styrofoam Balls Dry Foam Half Ball Small Styrofoam Balls for Christmas Thanksgiving Day and Festival for DIY Projects Home Craft Projects](https://m.media-amazon.com/images/I/31SAKAeZrsL.jpg)**vibedor 12 PCS 3 Inch Half Foam Balls White Styrofoam Balls Dry Foam Half Ball Small Styrofoam Balls for Christmas Thanksgiving Day and Festival for DIY Projects Home Craft Projects** vibedor**$8.59**4.4★83 reviews](https://www.amazon.com/dp/B0DMW5B5N2) [![Crafjie 4PCS 8 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31VfwNasiUL.jpg)**Crafjie 4PCS 8 Inchs White Foam Balls Half Round Polystyrene Half Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration** Crafjie**$22.90**4.7★371 reviews](https://www.amazon.com/dp/B0C77JJ19N) [![2 Pcs Floral Foam Half Balls 7.5W x 3.7H Half Round Green Dry & Wet Flower Foam for Fresh or Artificial Flower Arrangements Florist Foam for Craft Supplies Wedding Birthdays Home Decor](https://m.media-amazon.com/images/I/41laMuF7KUL.jpg)**2 Pcs Floral Foam Half Balls 7.5W x 3.7H Half Round Green Dry & Wet Flower Foam for Fresh or Artificial Flower Arrangements Florist Foam for Craft Supplies Wedding Birthdays Home Decor** GCVOPTON**$16.78**4.5★229 reviews](https://www.amazon.com/dp/B0DBH31G3Y) [![Crafjie 24PCS 3 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration](https://m.media-amazon.com/images/I/31RM6W9BEGL.jpg)**Crafjie 24PCS 3 Inchs Half Foam Balls White Half Round Polystyrene Foam Balls Craft Supplies Hemispherical Christmas Craft Ballfor DIY Home Craft Project and Art Decoration** Crafjie**$16.38**4.4★390 reviews](https://www.amazon.com/dp/B0D3CHJ8JM) ## **Reviews** What buyers praise and complain about, mined from review topics. ### **What buyers love ** **Quality-Overall**14% *“These Half Foam Balls are great quality”* **Advertised Vs Actual Product**13% *“Exactly What I Needed”* **Size-Overall**12% *“Love the size”* **Ease Of Use**10% *“Easy to use”* **Efficiency**8% *“Works great and it's also an exercise tool”* **Value For Money**7% *“Good price”* **Strength**5% *“It was very sturdy”* **Design-Overall**4% *“Perfect for decorating and craft projects”* **Weight Light**3% *“Not heavy at all”* **Soft Feel**3% *“They are smooth”* ### **What buyers complain about ** **Size-Overall**28% *“Too large for my project”* **Hard Feel**9% *“Very hard”* **Value For Money**8% *“a little pricey”* **Adhesion/Stickiness**7% *“You can't use super glue on them”* **Ease Of Use**4% *“I just couldn't use it”* **Ease Of Cleaning**3% *“Messy”* **Soft Feel**3% *“It is a little too soft”* **Shape/Style**3% *“Not circular”* **Durability**3% *“Fell apart when using them for my project”* **Strength**3% *“Didnt hold together”* #### **Top return reasons**- Size-Overall72% - Advertised Vs Actual Product6% - Value For Money4% - Functionality-Overall3% - Hard Feel2% - Material Quality2% - Defective Material/Parts1% - Shape/Style1% - Ease Of Use1% - Quality-Overall1%