HOWTO Make a business-card catapault

Instructables user Clide has created a business card that you can assemble into a papercraft catapault! "After seeing the business cards with gears a few months back (normal and planetary), I started thinking about what else could be made to fit in a business card. I wanted something unique and memorable that could represent me and my creativity. What I came up with was a business card that can convert into a rubber band powered desktop catapult."

Cardapult the Business Card Catapult (via Craft)