The mimeolight has got to be the easiest way to tastefully adorn your electronic craft projects with customizable blinking patterns. Aim a flashlight or wave your hands in front of it and it will record and repeat those patterns, up to 1 full minute. Just sew it to a 3 volt power source.

The trick is to flash a light source on the mimeolight 3 times within a second to get its attention. It lets you know it's ready by blinking 4 times rapidly. Then you can flash your pattern. When you are done, simply stay still and the mimeolight will stop recording, immediately playing back your patterns. That's all there is to it.