That is an awesome idea and you totaly should post everything and let me know when its done! I LOVE IT!
You could make him a fake sword or weapon because he's gotta have protection from all those other wannabe evil overlords that wanna assasinate him. You can also maybe get him some movies with classic bad guys in them...or make him a fake Evil Overlord address book with pictures and numbers/address for bad guys like the riddler, george bush (haha!), lex luthor, the brain from pinky and the brain, Darth Vador, and anyone else you can think of :-D
I could probably think of other ideas so PM me if you need more!