I hate seeing my work uniform sitting around the house. I try to hide it the best I can on my days off so I'm not reminded that tomorrow I have to go and do some more pointless bullshit for money.
I also went to spend time with some friends not too long ago, and their house drove me nuts. Nothing in particular, really. It was just they had a lot of anarchy in the cupboards, so if I went looking for a glass or something I'd have to go all Sherlock Holmes for the mofo.
They also had a cat that constantly threw up. It was distrubing whenever it happened during mealtime. For example:
"Hey, this casserole ain't too bad. I really like the--"
*BLAAAAAAAGH UGH UGH BLARRRRRR*
"Oh, your cat is puking again.

"
Jam it back in, in the dark.