I bought one box of the Magic Bouncy Balls, and because the kids had so much fun making the bouncy balls, I had to purchase two more boxes, so they could do it again and again. This is an easy, yet very fun project that everyone can enjoy!
Magic Bouncy Balls - Create Your Own Power Balls Craft Kit for Kids
I bought this for my 9 year old granddaughter and she is enjoying making the balls and having loads of fun playing with them. It definitely was a good buy for the money and I would recommend it for a good gift for children.
I purchased these to do something different with my 2.5 year old. She had so much fun choosing colors and pouring them into the molds. Fun project with quick results.
Might be able to make 43 bouncy balls if you only use the teeny tiny marble sized mold. The medium and large molds need multiple packets of the mixture to fill, and I would say you could probably get 18 to 20 out of those.