---
product_id: 425031864
title: "KEVA Contraptions Reactions Planks Building Toy - 178 KEVA Building Planks (191 Piece Set) - Free-Form Wood Building Set for Kids to Create Their Own Ball Maze – Ages 7 & Up"
brand: "mindware"
price: "127927CFA"
currency: XOF
in_stock: true
reviews_count: 9
category: "Mind Ware"
url: https://www.desertcart.sn/products/425031864-keva-contraptions-reactions-planks-building-toy-178-keva-building-planks
store_origin: SN
region: Senegal
---

# Create dynamic marble runs & chain reactions Includes 16-page illustrated idea book 178 precision-cut wooden planks KEVA Contraptions Reactions Planks Building Toy - 178 KEVA Building Planks (191 Piece Set) - Free-Form Wood Building Set for Kids to Create Their Own Ball Maze – Ages 7 & Up

**Brand:** mindware
**Price:** 127927CFA
**Availability:** ✅ In Stock

## Summary

> 🛠️ Build brilliance, trigger wonder — your next masterpiece awaits!

## Quick Answers

- **What is this?** KEVA Contraptions Reactions Planks Building Toy - 178 KEVA Building Planks (191 Piece Set) - Free-Form Wood Building Set for Kids to Create Their Own Ball Maze – Ages 7 & Up by mindware
- **How much does it cost?** 127927CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/425031864-keva-contraptions-reactions-planks-building-toy-178-keva-building-planks)

## Best For

- mindware enthusiasts

## Why This Product

- Trusted mindware brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **All-Inclusive Creative Kit:** 191 pieces including dowels, balls, bell, bowling pin & toy car to spark imagination.
- • **Build Epic Chain Reactions:** Design marble runs that trigger bowling pins, bells, and more for endless fun.
- • **Premium Precision-Cut Wood:** No glue or connectors needed—planks stack perfectly every time.
- • **Family Bonding & Skill Growth:** Perfect for kids 7+ and parents to collaborate and inspire engineering curiosity.
- • **Master STEM Concepts Hands-On:** Explore balance, leverage, geometry & physics through creative play.

## Overview

The MindWare KEVA Contraptions Reactions Planks Building Toy is a 191-piece premium wooden set designed for kids 7 and up to explore STEM principles through hands-on building. Featuring 178 precision-cut planks plus unique reaction pieces like balls, a bell, and a bowling pin, it enables creation of intricate marble runs and chain reactions without glue or connectors. This set encourages creativity, problem-solving, and family collaboration, making it a top-rated educational toy for aspiring young engineers.

## Description

desertcart.com: MindWare KEVA Contraptions Reactions Planks Building Toy - 178 KEVA Building Planks (191 Piece Set) - Free-Form Wood Building Set for Kids to Create Their Own Ball Maze – Ages 7 & Up : Toys & Games

Review: Creative toy - no batteries required - Was given as a gift. He loved building and creating with it. It has a lot of materials in a small box. Was surprised when he created a domino run almost 12 feet long.
Review: Great fun for 6-year old ... and his Dad! - Why did you pick this product vs others?: Requested by 6-year old Grandson. He and his Dad have been working on it together. They've been having a lot of fun with it. He's beginning to build it on his own now.

## Features

- STEM Toys That Teach: These KEVA blocks help kids gain first-hand experience with balance, leverage, geometry and the principles of physics while fostering an interest in architecture and design
- Create Chain Reactions: Use the wooden building planks to build a marble run full of tunnels, ramps and other contraptions, then see if your KEVA ball sets off chain reactions like knocking over a bowling pin or ringing a bell
- Unique Plank Building Block Set: This wood building set features traditional KEVA planks along with colored building planks and unique pieces to create one-of-a-kind KEVA ball run structures
- No Hassle: These premium KEVA STEM planks are precision-cut from beautiful wood to stack perfectly time after time, no glue or connectors needed; simply unpack and build impressive KEVA structures
- KEVA Contraptions Reactions includes 178 wooden planks for building, 8 dowels, 2 reaction balls, 1 bell, 1 string, 1 bowling pin, 1 toy car and a 16-page illustrated idea book (Ages 7 and up)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09J69CHVP |
| Best Sellers Rank | #40,331 in Toys & Games ( See Top 100 in Toys & Games ) #1,489 in Toy Building Sets |
| Customer Reviews | 4.6 4.6 out of 5 stars (65) |
| Item Weight | 5.13 pounds |
| Manufacturer | MindWare |
| Manufacturer recommended age | 8 years and up |
| Package Dimensions | 14.72 x 9.69 x 3.39 inches |

## Images

![KEVA Contraptions Reactions Planks Building Toy - 178 KEVA Building Planks (191 Piece Set) - Free-Form Wood Building Set for Kids to Create Their Own Ball Maze – Ages 7 & Up - Image 1](https://m.media-amazon.com/images/I/71e1Qp3SLvL.jpg)

## Questions & Answers

**Q: How is the Contraptions Reactions set different from standard KEVA planks?**
A: Beyond 178 wooden planks, you get reaction pieces—bells, dowels, a bowling pin, string, balls, and more—to trigger chain-reaction events.

**Q: What will my child learn?**
A: Hands-on lessons in balance, leverage, geometry, force and motion while they experiment with cause-and-effect.

**Q: Do the planks require glue?**
A: No, precision-cut wood stacks perfectly—kids can redesign contraptions endlessly.

**Q: What ages is it for?**
A: Suggested for ages 7 +—challenging enough for tweens but still safe and open-ended.

**Q: Does it come with build ideas?**
A: Yes, a 16-page illustrated idea book jump-starts creative marble-run and chain-reaction challenges.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Creative toy - no batteries required
*by K***K on December 14, 2025*

Was given as a gift. He loved building and creating with it. It has a lot of materials in a small box. Was surprised when he created a domino run almost 12 feet long.

### ⭐⭐⭐⭐⭐ Great fun for 6-year old ... and his Dad!
*by A***R on June 21, 2025*

Why did you pick this product vs others?: Requested by 6-year old Grandson. He and his Dad have been working on it together. They've been having a lot of fun with it. He's beginning to build it on his own now.

### ⭐⭐⭐⭐⭐ Great creative play
*by C***N on January 9, 2026*

My grandson age 9 played with this most of the day when he got it for Christmas.

## Frequently Bought Together

- MindWare KEVA Contraptions Reactions Planks Building Toy - 178 KEVA Building Planks (191 Piece Set) - Free-Form Wood Building Set for Kids to Create Their Own Ball Maze – Ages 7 & Up
- KEVA Structures 200 Wood Building Planks Set - Building Toy Includes 200 Wooden Blocks and Idea Book - Ages 5 and Up
- MindWare Keva Brain Builders Deluxe: STEM Building Toy Includes 75 KEVA Planks, 40 Puzzle Cards, 8 Design Cards, 3D Building Skills for Kids - Ages 7+

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-01-28*