I tend look at the purpose of things. Is it something I could use or just decorative. I do have small collections, like 20's-40's tobacco tins, cigarette pack and cigarette case. For those I just display them together with an old ashtray on a large radio or dresser. Same for some of the other items I have sets of. I got a matching set of transiter radios,a small base model and the larger model and put them together on a dresser. For the most part I like things to look natural and sometimes look through old magazines or family photos for ideas for recreating the 30's-40's look.