If you have books (slow clap), then you most likely need bookends. How about a clever approach to keeping your books in order, while also adding chic geek to your bookshelf? Yup, you should get old Nintendo game cartridges that have been recycled into bookends. There are only a few this one dude makes so hop to it.
Currently, he has these games in stock: Kirby's Adventure, Metal Gear, Shadow Gate, Mario / Duck Hunt / Track and Field, Teenage Mutant Ninja Turtles, Gyromite, Captain Skyhawk , Karate Champ, The Karate Kid, International Track and Field, Golf (Mario cover), Ice Hockey, and Double Dribble. Go crazy. Buy them on Etsy.com.