I'll add mine:
MAD magazines, paperbacks and hardback books. I have them all since 1956 when it switched from a comic book to a magazine.
Books about WWII European Theater.
Anything with Penn State on it as well as complete games on DVD and media guides since 1965.
Some coins, especially US Silver Eagles (may be the nicest coin ever made).
Dilbert stuff.
My wife thinks that is enough along with the 227,000 sports cards.
