A few odds and sods! IRIX is an interesting OS to customise and play around with, and I've done a bit of work with porting a couple of apps to IRIX, mainly rdesktop (open-source Remote Desktop client), plus also some work a while ago with OpenTTD. Other than that, the Indigo2 sounds great for music and can rip vinyls quite nicely, playing the odd retro-game like Doom or various ScummVM games is also fun.