Mats Engstrom made this spooky light bulb mod using ultraviolet LEDs, fluorescent ink from a highlighter, and an old light bulb in this instructable. – Link.
This Summer Fun Guide is brimming with over 50 projects for kids of all ages. You’ll also find inspiring young maker profiles, as well as tool reviews written for and by kids! Plus, it’s our 3D issue, complete with 3D glasses and tons of super-cool 3D photos!