This genius idea just seems too simple. Create a pen caddy with toilet paper rolls and an old shoe box! Or, use them to organize those pesky cords. ( this page isn't found but I think you get the idea )
Paper plates, Popsicle sticks, and a balloon are all you need to play Balloon Ping-Pong. (Not sure how sturdy the paper plates would be, but may be able to do something similar for a carnival/game night social event theme.