So the local Make:NYC meeting had had a badge contest for its second meeting.. (link here), the gist of the competition is to make a wearable nametag/badge of some sort, of some materials, that could be reasonably accepted as a "badge"..
this Instructable is how I built mine for the contest.. pretty much everything that went into the badge was something I had around my workshop from previous projects, and obviously the design can be pushed to do more interesting things.
but I'll leave that up to you.
Step 1: Get ahold of a gameboy printer and some paper!
the real trick is getting the paper, while you can also find this on ebay, your looking for something that has never been opened, hasnt been exposed to light ect... as it turns out the fancy thermal printing paper the gameboy uses doesnt survive well with time.. and some colors of paper seem to last better then others, but almost every roll will give you *something*.