I collect stuff that is leopard print (sounds crazy) but I do. It has to be true leopard print, not any pink or weird colored stuff. I have leopard print home furnishings too, but its all very tasteful and not tacky at all. I (sometimes) collect International Barbie dolls (I have Italian barbie, Korean Barbie, Japanese Barbie,.....)
My husband collects karate movies (actually we both do) and all kinds of martial arts video's.
When I was younger, I used to collect Marilyn Monroe memorabilia but I stopped.