(NOTE: This takes longer than you think. The upholstery needles used for the conductive thread dull fast.) Last year we tried our hand at putting a light on a hat. Troubleshooting proved too much for some of the kids, and I still have half-completed projects. Thankfully I found a book to use (Sew Electric, by Leah Buechley and Kanjun Qiu). This book focuses mostly on Lilypad Arduino projects. But the first project in the book is a lighted bookmark. This can easily be turned into a bracelet. Using a metal snap as a switch requires deeper thinking, and these instructions from atx-diy are the ones we used to learn more about it. Looking for tutorials on Youtube, I found this project that uses the same tools and can be used in a variety of ways. After waiting for students to bring completed projects back from the holiday break, I finally took a picture of my attempt. The light works, until I snap the bracelet on. . .more thinking needed!