Another fun one is garbage can corn.
1 Leave the husk on (Maybe remove a few outer leaves, but make sure there is at least a 2-layer covering on each ear), and soak them for an hour or so.
2 Take a clean metal trash can, and arrange beer cans full of water to completely cover the bottom (the fun part is emptying the cans ahead of time).
3 Place your soaked corn on top of the beer cans, cover with the trash can lid, and place directly on the coals of a campfire for about an hour.
4 Pull the can off and consume. The steam from the beer cans will keep the corn hot long enough to eat them.
5 Repeat with another trash can, until you run out of corn or beer.