How to Make a Cardboard Yo-Yo
Here's a fun project using household scrap materials: making a cardboard yo-yo courtesy of The Curiosity Show. You just need some cardboard, string, a paperclip, and scissors. Enjoy:
As a bonus, late in the video we see how to make a yo-yo with bottle caps, clay, and a fastener. If you're really advanced, check out this video on making wooden yo-yos with a lathe.