I found this OPI Spookettes mini nail polish set on sale at the drugstore recently. I believe it is last year's set but I really wanted the glow-in-the-dark polish called Zom-Body To Love. The 2012 set is called So-So-Skullicious and it looked really cute but I passed on that one.
I got Pumpkin, Brewberry, Boo, and Vampire Blood. They didn't have the other Halloween ones available at the time I went in. The other ones are Candy Corn, Bat Bite, and Ghoul Friend that I know of. It's always a good idea to have hand sanitizer around, you never know what sorts of SCARY germs you might run into out there!