-Taking stuff apart. I've taken apart computers I have sitting around solely because I was bored and "they needed cleaning." Also anything dead that remotely interests me has to pass my screwdriver gauntlet before it's allowed to leave.
-Anything mechanical, I've got two cars that continuously demand I feed them money, one's sitting right now because it asked for a new clutch and transmission. There's also a '68-69 air-cooled VW engine on my workbench I've been slowly rebuilding, as well as a '56 Chris-Craft/Hercules marine engine that my dad and I are kind of stuck on rebuilding, because it's basically stripped to almost nothing and it's still too heavy to move.
-Networks, as odd as it may seem. I took it upon myself to wire our house with 100Mbit ethernet and I've gotten so into making sure everything runs smoothly that if something isn't working right, my name gets called and 9 out of 10 times I can fix it.
-Music, making and listening. I don't record or compose or anything, I just do it for my own pleasure. I've been tooling around with the violin and an old Italian accordion lately.
-D&D, spawned from playing WoW with my friend one day. He said "We should try out D&D some day." That was the end of my WoW subscription, so far I think this has been cheaper.
