What Do You Do With Your Second Bedroom?

I've been looking at various places as I need to move. The place that is a front runner is quite small compared to what I'm used to, but i like the area and how it looks. I think the living area space would work fine but I'm wondering if the bedroom is small, in which case I could put my dresser or bedding in the second bedroom. Would I like that? Would I like having the "bedroom" split up?

What do you guys do with your spare rooms when there isn't anyone else to care?