These mobiles are fascinating to watch as they roll up and down - whether you are a young at heart adult or an infant looking up. The work on the same principal as a yo-yo but need to be manually "wound up" and then let go.
Our grandson is so mesmerized by the play of colours as the mobile twirls that he happily submits to diaper changes. This means that these mobiles have become a "must" for every diaper station he regularly attends. Ditto for his cribs.

Yo-Yo Mobile Plans
Plan 401

$7.99 US + S&H for a set of 3 different plans: Panda, Boxer, Orca Whale

Full-Sized Plans for 3 different mobiles.
Approx: 8"W X 12"H
Skill Level: Beginners