Blinking LED’s + cellphone vibrator = funbox

The electronic portion of the device primarily consists of a do-it-yourself Arduino driving 10 LEDs. The LEDs change flashing patters whenever the luminosity level dips below threshold. This lets you change patterns by passing your hand over the device. It also contains a cell phone vibrator to let you know it’s turned on and to give it an extra sense of presence when it’s in your hand.

Blinking LED’s + cellphone vibrator: [Link]