If you are on a mac and can specify what you're using I could make that for you as long as you use something that can be recognized as a HI device, I've done similar things with apple trackpad, McAlly airstick and wimotes, for plain live use without a computer that would be just a little bit more of a challenge, but I'm sure I can figure that out as well
just send me a mail at llumen [at] me [dot] com
best
pieter