My favorite souvenir is a 10 inch tall ceramic replica of the Disney totem pole that's in the lobby of the Wilderness Lodge; the one with Mickey, Goofy, Donald and Humphrey the Bear. I love it. It sits in a prominent place in the living room!
I also love my little plastic Figment figurines--no surprise there, right? I have two of them, the standard Figment (like my avatar) and Figment in his spacesuit. Both of them sit right by my computer.