(I know that sounds terribly vague! LOL)
I collect cookbooks - the crazier the better! I also like to pick up a cookbook when I'm on vacation from the area that I visited, and then I attach a snapshot from our trip to the inside cover of the cookbook. My mother has a cookbook that has stovetop rings burned into the back of it. I'm hoping to inherit that cookbook one day.
I have some kitchen cabinets with glass fronts and all of my cookbooks live there.
So what do you collect and how do you display your collection?