Hollow Blocks
FailShoppers spend an estimated $12K a year here, so Hollow Blocks is a Fail.
- Flapen Score
- 35 / 100Ranks 2,644 of 3,143 Toys & Games niches · −11 vs the category median of 4635
- Market size
- $12K/yr7K searches / yr
- 90-day growth
- -12.7%search demand this quarter
- Competition
- 78%top-5 click share · 9 brands · 20 sellers
Flapen Score
Hollow Blocks against its category
The dotted line is the Toys & Games average. Past it, Hollow Blocks is stronger. Inside it, weaker.
Market
The Hollow Blocks market on Amazon at a glance
Shoppers on Amazon United States searched for Hollow Blocks 7K times last year and spent an estimated $12K. The top 5 brands take 81% of clicks. Demand peaks in Nov–Dec. Flapen scores it 35 out of 100, a Fail.
01 · Demand
An estimated 1.8% of those searches ended in a purchase.
Shoppers searched for this 7K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 1.8% of those searches ended in a purchase. Searches in the last 90 days moved -12.7% against the 90 days before. Searches, conversion and average price together put the market at an estimated $12K a year.
- Searches, last 12 months
- 7K
- Growth, 90 days vs prior 90
- -12.7%
- Conversion, latest week
- 1.8%
- Market size, estimated
- $12Ka year
- Peak month
- November2.6× the quietest month
- Top search term
- hollow blocks5K searches a year
02 · Price
A sale here is worth $97.72.
Listings sell for $97.72 on average, from $29.97 to $181.68. Amazon reports units sold in ranges. This niche sold 100 to 250 a year. The average listing sells 0 to 100 of them. At $97.72 that is $0 to $10K a year per listing.
- Average price
- $97.72inside the $15 to $100 sweet spot
- Price range
- $29.97–$181.68
- Amazon United States median price
- $24.38across 115,062 niches
- Units sold a year
- 100–250
- Units per listing a year
- 0–100
- Revenue per listing a year
- $0–$10K
- Returns
- 1.7%of orders · Amazon United States median 2.1%
03 · Entry bar
The bar here is low.
70% of listings pay for placement with sponsored ads. 70% ship with Prime. On an average day, 3.9% of listings are out of stock. The average listing ranks #479 within Stacking Blocks. It carries 260 reviews at 4.49 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 70%
- Prime listings
- 70%
- Out of stock, average day
- 3.9%
- Average rank
- #479in Stacking Blocks
- Average rating
- 4.49 starsAmazon United States average 4.42 stars
- Average reviews
- 260per listing
- Listings tracked
- 10
04 · Newcomers
1 of last year's 1 launches cleared the first-year sales bar.
1 products launched here in the last 12 months. 1 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 63 months on average, so the names here are established.
- Launched, last 12 months
- 1
- Successful launches
- 1Amazon's first-year sales bar
- Average brand age
- 63 months
Products
Top Hollow Blocks products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 30, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
ECR4Kids Blocks and Arches Wooden Stacking Playset Montessori Toys Natural 18-Piece
- Price
- $156.88
- Rating
- 4.6/5
- Reviews
- 124
- Age
- 19y ago

Xylolin Over-Sized Hollow Wooden Block Set for Kids Natural 29 Piece Set of Large Wood Blocks Preschool Toddler Building and Stacking Blocks Wooden Toys Building Blocks for Kindergarten
- Price
- $173.43
- Rating
- 4.3/5
- Reviews
- 36
- Age
- 4y ago

Back2School Express Wooden Building Blocks for Kids Ages 3+ - 18 Piece Montessori STEM Learning Toy Set Natural Hollow Blocks for Toddlers Educational Preschool Stacking Toys
- Price
- $140.08
- Rating
- 4.0/5
- Reviews
- 9
- Age
- 1y ago

Guidecraft Mini Hollow Blocks - Set of 16: STEM Learning & Educational Toy for Children; Creativity and Focus Block Play Accessory Set
- Price
- $80.39
- Rating
- 5.0/5
- Reviews
- 9
- Age
- 21y ago

Melissa & Doug Jumbo Cardboard Blocks Building Set (40 pc) - Lightweight Building Toys and Montessori Toys for Toddlers and Preschool Learning Activities
- Price
- $34.40
- Rating
- 4.7/5
- Reviews
- 2,179
- Age
- 7y ago
Trending
estimated 90-day click momentum
WOODENFUN Wood Building Blocks Set for Kids 32 Pcs Rainbow Stacker Stacking Game Construction Toys Set Preschool Colorful Learning Educational Toys Geometry Wooden Blocks for Boys Girls
- Price
- $30.69
- Rating
- 4.6/5
- Reviews
- 103
- Age
- 2y ago

Sterling 6.8mm HollowBlock2 Loop - Tan 19
- Price
- $29.97
- Rating
- 4.8/5
- Reviews
- 107
- Age
- 13y ago

Dinhon 23PCS Sensory Blocks for Toddlers 1-3 & Kids 4-8 - Large Montessori Wooden Building Blocks with Rainbow Colors Stacking Toys for Boys Girls Sensory Play & Preschool Learning Toddler Gift
- Price
- $35.86
- Rating
- 3.7/5
- Reviews
- 17
- Age
- 11mo ago

Constructive Playthings Junior Large Hollow Wooden Blocks for Toddlers and Kids Ages 2-7 Set of 18 Assorted Shapes Solid Hardwood
- Price
- $181.68
- Rating
- 5.0/5
- Reviews
- 7
- Age
- 16y ago

Melissa & Doug Jumbo Cardboard Blocks Building Set (40 pc) - Lightweight Building Toys and Montessori Toys for Toddlers and Preschool Learning Activities
- Price
- $34.40
- Rating
- 4.7/5
- Reviews
- 2,179
- Age
- 7y ago
Newest
by launch date
Dinhon 23PCS Sensory Blocks for Toddlers 1-3 & Kids 4-8 - Large Montessori Wooden Building Blocks with Rainbow Colors Stacking Toys for Boys Girls Sensory Play & Preschool Learning Toddler Gift
- Price
- $35.86
- Rating
- 3.7/5
- Reviews
- 17
- Age
- 11mo ago

Back2School Express Wooden Building Blocks for Kids Ages 3+ - 18 Piece Montessori STEM Learning Toy Set Natural Hollow Blocks for Toddlers Educational Preschool Stacking Toys
- Price
- $140.08
- Rating
- 4.0/5
- Reviews
- 9
- Age
- 1y ago

WOODENFUN Wood Building Blocks Set for Kids 32 Pcs Rainbow Stacker Stacking Game Construction Toys Set Preschool Colorful Learning Educational Toys Geometry Wooden Blocks for Boys Girls
- Price
- $30.69
- Rating
- 4.6/5
- Reviews
- 103
- Age
- 2y ago

Large Wooden Building Blocks Set for Toddlers 36 PCS Big Colorful Rainbow Window Hollow Blocks Set Montessori STEM Construction Toy for Kids Sensory Stacking Blocks for Preschool Kindergarten Play
- Price
- $113.77
- Rating
- 4.2/5
- Reviews
- 10
- Age
- 3y ago

Xylolin Over-Sized Hollow Wooden Block Set for Kids Natural 29 Piece Set of Large Wood Blocks Preschool Toddler Building and Stacking Blocks Wooden Toys Building Blocks for Kindergarten
- Price
- $173.43
- Rating
- 4.3/5
- Reviews
- 36
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 78% of clicks. A locked shelf that new listings rarely crack.
Brands
9 rising
Sellers
20
Est. top-5 brand share
81%
Top 20: 100%
Est. top-5 click share
78%
Top 20: 100%
Open market
13%
- Xylolin26%
- ECR4Kids24%
- Back2School Express14%
- Guidecraft10%
- Melissa & Doug6%
- WOODENFUN6%
- Open — no brand owns it (3 brands, 13%)
Demand
Hollow Blocks search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Nov, Dec · busiest ÷ quietest = 2.6×
Search terms
Top Hollow Blocks search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- hollow blocks5K/yr
- hollow blocks for preschoolers1K/yr
- large hollow blocks607/yr
- hollow block set301/yr
Reviews and returns
What reviews say buyers love and hate about Hollow Blocks
We read the reviews and the return reasons for every product selling here.
“hard to put together”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
15 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Hollow Blocks questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data








