DS Daily: What would your DS do?

We've seen some very neat and useful DS homebrew applications over time -- to say nothing of useful retail titles -- and we can't help but admire those people who turn their handhelds into tools for every occasion. We admire it so much, in fact, that we've decided that this is a day for pretendy-fun-time. Imagine you're a super awesome programmer* who can craft any sort of (realistic) homebrew application for the DS. What would you do?

*If you already happen to be a super awesome programmer, uh, pretend you're a panda or something. It'll be fun.