The homebrew community lurves the Nintendo DS, and it's no surprise why: a portable system with WiFi capabilities, two screens, and none of the firmware-updating nonsense that the PSP has become infamous for? If we had the skills, we'd be 'brewing it up too.
Luckily, our BFF's over at DS Fanboy have put together an incredibly handy guide to the best DS homebrew peripherals, and what to do with them once they arrive on your doorstep. It even comes with a handy glossary, so you can feel cool and start dropping terms like "MoonShell" and "DLDI." Instant homebrew cred!