The point of a penpal ain't to write letters, it's to stay in touch with each other. And 'sides, if you really do want to write a letter on a piece of paper, just deliver it to their house! Ya don't need a mail system to get a letter into someone's mailbox, ya know.

And if you don't wanna write or talk, I'll accept a game of charades. Just don't start with morse code or braille, because not everyone can understand that sorta thing.