God, I wish THE CAROL BURNETT SHOW were still on the air. Just brilliant.
When I was in Louisville, I bought souvenirs from every touring production that came through. T-shirts (which I actually wore to school. Oh! The horror!), posters, postcards, magnets, programs. You name it, I probably bought it. I don't buy any theatre memorabilia anymore. Not since I moved to NYC and have Broadway in my backyard.
I still collect window cards, though. I have some great ones - a lot of flops, but a couple of rare ones, too. Like the 6 ft. x 1.5 ft. CHORUS LINE poster that they put out when the show became the longest-running musical in Broadway history. It features all the pictures of the Lines (the logo with all the various casts) as well as a listing of every dancer who had done the show up to that point. It's currently rolled up in a tube in my closet because I can't afford to have it framed.
I also keep the Playbills for every show I see. Especially the flops. I ususally get two or three copies of the ones I know will bomb. Right now I have 192 Playbills/Showbills/Stagebills, etc. And that's just since I moved to NYC!!