I've had collections of things for ages. Stuff just follows me home. At this point it's gone from stuff to junk. I'm trying to get rid of things, but it's a struggle.
I collect Hallmark Ornaments. So at least they aren't out year round.
I also have a collection of coins from around the world. They don't sit out though. I just think they are fun to look at. It was kind of disappointing when the Euro came out because so many currencies went away. Someone heard I love them and sent me some she'd saved from her country.
I collect shoes it's not a "I have to have this amount" or anything, it's a never completed collection. I just like a wide variety and would love to have a pair for every occasion