I havent collected baseball cards for a few years now but I still have quite a collection. So I chose that option.
I an horrible with books. I buy books all the time with every intention of reading them but they end up sitting on my shelf collecting dust. So I have come to the conclusion that I simply like collecting books.
Art items....well, kinda. I guess. I have a painting and different art items, not just paintings, interest me and I collect them as much as I can.
I have a nice collection of bobblehead dolls, mostly Mariners right now, on top of my shelf. If I had more money coming in that would be a bigger collection most likely.
Oh, and I collect baseball stuff. Anything baseball related. Ive got an M's batting helmet, the bobblehead dolls, posters, books, and anything else I can get my hands on.
And I collect hats. Unintentionally though. I buy them thinking that I will wear them only to hang them somewhere. I hardly wear any of them, lol.