I collect (or rather used to before kids) GWTW memorabilia. I started out collecting reproduction B&W prints of scenes from the movie. First original piece I purchased was a B&W still print of Vivien Leigh and Clark Gable - only 120 prints were made for magazine publication only. The biggest (and most expensive) piece I have is an original movie poster from 1954 with a deep purple background - it is my most favorite piece because it's so different.
I used to collect beanie babies but they are now bagged and boxed and put away. For a time, we collected 1/24 scale Nascar cars - something the whole family enjoyed collecting.
But now, like Nicole, I collect dust