The GSI Outdoors Compact Scraper is a great tool to have in your backpacking kitchen since it can make cleaning pots, pans and dishes a lot easier. It's basically just a small plastic scraper. One side has a flexible rubber edge, while the other side is a hard, plastic scraper edge. Using them both, you can get pretty much anything off a pan before you really have to start scrubbing it, which can save a lot of scrubbing and time you would spend with just a sponge.
Made something with a lot of sauce or liquid? Use the rubber edge to squeegee it all out. Something burned on to the pan? Use the hard plastic scraper edge to break it up and get it off. It's that easy.