Get an extra bumper and read up on fiberglass molding if you're really curious about the process. It won't be good the first time, and probably won't be pretty, but it's fun to learn. You'll probably destroy the bumpers you learn on, but if you can find em cheap enough (look for ones that are already messed up/cracked... repairing cracks with fiberglass/filler is a good way to learn to work with the materials) then it doesn't really matter how many you go through.

That's what I would do if I were as bored as you seem to be haha