Everything. I'm a total junk collector.

Wolf and siberian husky items....sculptures, stuffed animals (I have an entire shelf full), books, etc. If I find a siberian husky item, it's a must-have.
Hagen Renaker figures (mostly dogs) and animal figures/sculptures in general
U2 items...cds, vinyl albums (I don't even play them as I have all the cds, I just buy them, yes I'm crazy), shirts, books, etc...pretty much if it's U2 I can't walk out of the store without it.
Traffic cones and fake lemons
Scrapbooking stuff/stickers (Mostly dog items...I'm sure I have enough to make 30 scrapbooks)
Apparently I collect dog toys too as Nebo has hundreds

This would be why I can't seem to keep my room clean.......