I have a few different things that I do with my Playbills.
For the playbills that I've collected, and are not actually from shows I've seen, I put in the Playbill binder with the plastic sleeves. It actually works perfectly, and since I'm in a dorm room and can't do a huge wall display, saves me lots of space.
For the playbills I've saved from shows I've seen, however, I have a scrapbook that I started last year for my theatre experiences.
For each time I went to see a show, I have a layout that includes the playbill, the ticket stub, any flyers I got, and if I got them, pictures from the stagedoor.
To put the playbills in the scrapbook, since it's not one that you just slip the materials in, I bought a pack of the extra plastic sleeves from the Playbill binder and cut off the three-ring part, and then I attached that to the page with double sided scrapbook tape. It actually works perfectly.
I write the date, location, and any other info I want to remember (understudies for the night, etc) on the page, and it's a wonderful way to remember my experience, all in one place.
I'll take a picture and post it if any of you guys are interested.
"Cages or wings, which do you prefer?"-- Tick, Tick...BOOM!