Computer battery broken? No problem! Just weld on a 12V boat battery. 70 pounds is a bit much for a "portable computer," but it's better than no computer at all!
Myself, I built a desktop a while back and I probably dust it once a year, but also do a mild cleaning whenever I upgrade a part. Usually just a simple wipedown and a couple of blasts from the ol' air canister and I call it good. What about you guys? Any special tips you use for getting rid of the gunk?
(bonus points if you post your own rig)