Review on 🦋 Butterfly-Powered Surprise Playing Pieces by Brian Rogel

Bought these butterflies to surprise my grandson for Christmas. Before putting them in the box, I tested a few of them. One didn't fly at all - it just unwound and flapped a little. Others flew 2 feet or so high. I've tried fewer or more than the recommended 25 times with no change. I tried to put them in a book and a box. The ones in the box didn't even get 2 feet in the air. I'm very disappointed and if I can't find a better set I won't be giving them away.