Soda Bottle Tumbling Toy // Homemade Science with Bruce Yeany

Tumbling toys have been around for quite a while,
commercial ones are nice but are limited in as an instructional piece due to the ball being encased inside a wooden capsule and little to due in the way of experimentation. Here is a simple version that can be produced using some recycled materials found around the home. The clear plastic of the bottle allows for visibility of the movement inside, plus the the simple design allows for some changes to the materials used inside.
Additional Gravity powered toys:
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Additional suggested video on tumbling toy
Douglas. Stith video on Tumbling Toys variations explained • Tumble Toy Variations ...
and
Tumbling toy variations • Tumble Toy Variations