Collectibles:
Theatrical window cards, my most prized of which are "Mack and Mabel, " "DreamGirls" and "A Little Night Music" (all originals in near-mint condition).
Movie posters, my most prized being linen-backed one-sheets of "Mutiny on the Bounty," "Demetrius and the Gladiators", and "The Egyptian", plus the British quad of "Cleopatra" and the half sheet of "There's No Business Like Show Business."
I also collect lobby cards -- full sets on some movie titles, but title cards on most. I also collect still sets...having to build them from individual still sales on eBay is the fun of it!!
I have numerous autographed stills, and signatures on things such as hotel registers, checks, etc. My main target is film composers, many of which are autographed copies of books (Mancini, Tiomkin), signed contracts (Hugo Friedhofer, Jerome Moross, Lionel Newman), and photos of composers conducting their music.
I truly don't have room to store these treasures, but I have them and much, much more...and cannot imagine what will become of them should I drop dead!