Are you in the market for an uber-cheap Halloween costume that you can wear once the fancy dress season is over? Perhaps one that has some underlying geek street cred? Then may we commend unto you the official Delorean pilot t-shirt, which bespeaks the credo of one Doc Emmet Brown and his sidekick Marty McFly: “My other ride has a Flux Capacitor.” Wear it with pride.

Bonus: Need a matching costume for your date? Outfit him or her with the 1.21 Jigawatts shirt.