Dumb 'camping food' questions?!

Dumb 'camping food' questions?

We're only staying one night. I don't want to go out and buy camping cooking supplies for just one night.

I've decided that we're eating hotdogs for dinner (easy to cook over a fire), but I want to know if there are any tricks for cooking things or boiling water without buying any new cookware (I don't have a cast iron skillet OR pots/pans w/out plastic handles).

Can I sit a can of beans in the fire?

How could I possibly boil water without a pot (hot chocolate would be nice)?

Any other ideas?

I always just open the cans and set them on the fire. remember to have some tongs or vise grips type thing to be be able to get it back off though. Hot dogs are great for cooking. I have also wrapped aluminum foil around a potato before and set it at the edge of the fire (takes a long time) but makes a great baked. You can boil water in the same can you placed on the fire with corn ect in it. just wash it out good first.