This cap Instructable is a part of our larger Lumenhattio
project, in which we're experimenting with ways to make stretchable glowing helmet covers that provides affordable, changeable style by day and safety light by night. We recently presented the Lumenhattio at the World Maker Faire
, and a lot of folks suggested that this is also a great project for teaching kids about electricity! The cap requires only 5 inexpensive materials to make, and because of its low voltage power supply and the resistance of the conductive thread, you won't get zapped with electricity while you make this cap!