i'm uncertain if this has been made before, but a small arduino of some sort, that is very portable, and preferably a wearable. with as many inputs/outputs as possible. analog and digital for various purposes. maybe also with a simple shield system, so you can add a watch function(somehow) or LED light show on the fly(maybe an mp3 player as well)of course you would still need a computer to program it, but that would still be awesome.
