---
product_id: 457217908
title: "KADU Rainbow 250 Piece Set - STEM/STEAM Building + Construction Toy, for Open + Imaginative Play Ages 5+"
brand: "incredibly interconnectable toys"
price: "€ 34.34"
currency: EUR
in_stock: true
reviews_count: 8
category: "Incredibly Interconnectable Toys"
url: https://www.desertcart.nl/products/457217908-kadu-rainbow-250-piece-set-stem-steam-building-construction-toy
store_origin: NL
region: Netherlands
---

# 6 vibrant rainbow colors Compact 0.78-inch pieces 250 versatile pieces KADU Rainbow 250 Piece Set - STEM/STEAM Building + Construction Toy, for Open + Imaginative Play Ages 5+

**Brand:** incredibly interconnectable toys
**Price:** € 34.34
**Availability:** ✅ In Stock

## Summary

> 🌟 Build brilliance anywhere, anytime with KADU’s colorful connection magic!

## Quick Answers

- **What is this?** KADU Rainbow 250 Piece Set - STEM/STEAM Building + Construction Toy, for Open + Imaginative Play Ages 5+ by incredibly interconnectable toys
- **How much does it cost?** € 34.34 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/457217908-kadu-rainbow-250-piece-set-stem-steam-building-construction-toy)

## Best For

- incredibly interconnectable toys enthusiasts

## Why This Product

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

## Key Features

- • **On-the-Go Entertainment:** Compact, quiet, and reusable container makes it perfect for travel, restaurants, and waiting rooms.
- • **Vibrant Rainbow Palette:** Six classic colors inspire creativity and visual learning in every build.
- • **STEM Learning in Disguise:** Subtly develops color recognition, pattern-making, and hand-eye coordination through play.
- • **Effortless Cleanup & Storage:** Lightweight 8.4 oz set fits neatly in its container for quick pack-up and zero mess.
- • **Limitless Creativity Unleashed:** One simple shape, endless building possibilities to spark your child's imagination.

## Overview

The Incredibly Interconnectable Toys KADU Rainbow 250 Piece Set is a compact, lightweight STEM/STEAM building toy designed for kids aged 5 and up. Featuring 250 uniform pieces in six vibrant colors, each measuring 0.78 x 0.78 x 0.16 inches, it encourages open-ended imaginative play while developing essential skills like color recognition, pattern-making, and hand-eye coordination. Its reusable container and quiet design make it ideal for on-the-go fun, earning a strong 4.7-star rating from over 400 reviews.

## Description

Buy Incredibly Interconnectable Toys KADU Rainbow 250 Piece Set - STEM/STEAM Building + Construction Toy, for Open + Imaginative Play Ages 5+: Building Sets - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great product - Exactly as described. Son loves them and can spend a long time building different things. Great gift ideas for those who like to build. Easy to use, easy to clean up.
Review: Perfect for little boys. - These have been so fun for my 4 and 5 year old boys. We take them to church with us and it's great to entertain them quietly. I was impressed with how much they could do with the amount we got. I just got a little zipper pencil pouch to contain them and it works great.

## Features

- 250 Pieces - Ages 5+ - Each piece measures 0.78 x 0.78 x 0.16 inches
- Jump right in with the easy to learn one piece building toy Kadu! The Rainbow set come with our 6 classic rainbow colors.
- One Simple Shape - There may only be one shape but, in the words of a seven-year-old, you “can build anything, really.” Then, easily pull them apart and start again.
- An Anywhere Toy - Kids are always on the go and always wanting something fun to do wherever they are. Just pop Kadu back in their reusable container and they are ready to go, too. Small and quiet, they are great for taking on the road, to restaurants, or to fill those “forever long” waiting room times.
- Learning Comes With Play - They won’t know it at the time, but you’ll be smiling as you see them learn and develop while playing with Kadu. It might start with color-recognition and pattern-making, while at the same time building hand-eye coordination. Or, see the mental connections forming as a determined mind tries new ways of keeping their building from collapsing.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0B2HQ3NH2 |
| Best Sellers Rank | #11,169 in Toys & Games ( See Top 100 in Toys & Games ) #485 in Toy Building Sets |
| Customer Reviews | 4.7 4.7 out of 5 stars (434) |
| Item Weight | 8.4 ounces |
| Item model number | 636343200144 |
| Manufacturer | Incredibly Interconnectable Toys |
| Manufacturer recommended age | 5 years and up |
| Package Dimensions | 10.04 x 1.97 x 1.97 inches |

## Images

![KADU Rainbow 250 Piece Set - STEM/STEAM Building + Construction Toy, for Open + Imaginative Play Ages 5+ - Image 1](https://m.media-amazon.com/images/I/61qGORUQMEL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by E***L on September 27, 2025*

Exactly as described. Son loves them and can spend a long time building different things. Great gift ideas for those who like to build. Easy to use, easy to clean up.

### ⭐⭐⭐⭐⭐ Perfect for little boys.
*by A***. on November 13, 2025*

These have been so fun for my 4 and 5 year old boys. We take them to church with us and it's great to entertain them quietly. I was impressed with how much they could do with the amount we got. I just got a little zipper pencil pouch to contain them and it works great.

### ⭐⭐⭐⭐⭐ Enjoyed by ten and six-year-old grandkids
*by B***L on August 9, 2025*

I bought these for my grandkids (ages 10 and 6) after they were introduced to them. They enjoy putting together different projects. They store well in the original packaging. Good value for the money.

## Frequently Bought Together

- Incredibly Interconnectable Toys KADU Rainbow 250 Piece Set - STEM/STEAM Building + Construction Toy, for Open + Imaginative Play Ages 5+
- Brain Flakes 500 Piece Set, Ages 3+, Interlocking Plastic Disc Toy for Creative Building, Educational STEM Learning, Construction Block Play for Kids, Teens, Adults, Boys, and Girls
- Learning Resources STEM Explorers Pixel Art Challenge, 402 Pieces, Ages 5+, STEM Toys For Kids, Coding Basics For Kids, STEM Activities For Classroom, Medium

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-23*