I have a whole crap load of stuff. Besides my house being full, I have an air conditioned storage unit close by that houses the rest of my collection. Tons and tons of stuff.
I don't really get too much of the newer things, other than the classic superstars series' and several books, DVD's, and photos. I've always had a large collection since I was very young, so my collection is made up of all of that stuff, stuff I added to it along the way, and things I acquire now being involved a lot.
I'm mainly going back and getting the things I need to complete certain collections that I have (when I can find them), and buying up old photo collections, ring used items, etc.. in addition to what I'm given. I have a good 90% of what I have still in the original packaging and condition, as I was lucky enough to get doubles of most of what I have.
Either my parents or myself would get me one to open and use, and one to collect, and then sometimes I'd get toys that I already had from friends, relatives, etc.. - so I'd keep them and collect them. I'm crazy like that