Darph Bobo shares this neat step-by-step project on Instructables Workshop: How to turn a dead flashlight into an uber LED light. It’s safe, fun (you get to crush a light bulb in your hand!), and best of all, simple. I don’t consider myself very handy at all but I definitely have the means to do this myself.
I love this project because of its marriage between the sustainability of energy-efficient LED lights and the greenness of repurposing old, spent electronics instead of sending them to the landfill.