gLovED is a series of prototypes for a glove that lights up an LED by completing a circuit with your fingers.
The first two versions were just for fun and required the user to pick up a coin battery in order to complete and power the circuit. This made them sort of like a magic trick.
In the final iteration, it seemed valuable to give the project a practical purpose, so I used it to solve the problem of trying to unlock your door when it is to dark to see and cold enough you want to wear gloves.
See Instructable (coming soon!)