We’ve put together a roundup of our simplest LED projects; easy things to put together mostly with a bare LED and a coin cell.
Pictured above, Basics: Simple LED Pumpkins
How to hack LEDs into Lego minifigures for Halloween, and LED Ghosties for Halloween
LED-lit sea urchin shells, RoboGames Awards
Picking resistors for LEDs and Some thoughts on throwies
Quick, easy, temporary, and beautiful LED garden lights
Paper Circuitry at Home: Electric Origami, and the Soft circuitry merit badge
Edge-lit holiday cards and part II, Refining edge-it holiday cards