Ritchie WetNotes are fantastic. They're waterproof paper. So waterproof that you can use them SCUBA diving. So there are some reef-fish whose fieldmarks are really hard to remember, and I have computer notes and drawings. So I thinks to myself, “Self,” I thinks, “I wonder if you can use your Laserjet 1300 to create waterfast id pages.”
Don't do this at home. It took me close to an hour to disassemble the machine and unwind the page from the roller to which it stuck. However, the toner was thoroughly baked on and proved to be waterfast.