Yes! I have tons of photos as well. And I didn't mention this because the OP asked about mementos that you "buy" but I have also kept the Playbill from every show I've seen since my first trip to NYC in 1989. And since people always ask about storage...they are in two large plastic bins that I store under my bed. I don't look at them often, but I do sometimes and I am always glad I kept them.
