As Gina said, there are only a few. Please eat them and make them go away forever! They can be used to patch potholes when needed. They also make good bricks for throwing at noisy cats, or annoying armadillos. When thoroughly soaked in alcohol they may be used to supplement worn out Tiki Torches. In times of dire need, they may be used to plug the exhaust of annoying Harley Davidsons, thereby rendering them harmless and silent. On hot days, compress one and place it under your kickstand, it will keep your bike from falling over on soft asphalt. Never, never drop one on your foot unless you are wearing steel toed shoes.
