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Building With Rainbows

Toys + Blocks
Activities
Books
Learning
Shopping Guide
About Us
Collaborate

self-propelling ball run

Grimm's rainbow ball run spiral instructions

Self-Propelling Spiral Ball Run

Emily
June 19, 2020January 13, 2021

Step-by-step instructions to build a self-propelling Grimms Spiral Ball Run

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Hello! Welcome to Building with Rainbows. I'm Emily, mom to "big E" (aka E9) and "little E" (aka E6). We love building ball runs, reading, and exploring outside. Join in with us!

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