I collect anime cds -avi(s), vcds, dvds- coz' I want to be able to rewatch them say 5 years or so from now. And I collect figurines, posters, mugs, stickers, and the likes just because I want to collect them, to look at them and to cheer me up somehow. Mangas and Doujinshis, to feed my fantasies.
How about you?