So I've been playing a lot of StepMania lately, and got the idea of getting a keypad and customizing it specifically for SM.
How cool would this be: [ Attachment Invalid Or Does Not Exist ] 49112[/ATTACH] dysubbed probably, to get the arrow thickness detail (the inner lines are probably too thin at this scale to make DS).
Additionally, a couple of other keys for enter, esc and tab (if you play stepmania you'll know why) could be awesome too.