Want to add an inexpensive yet effective tool for firemaking to your bob? Then grab a magnifying glass sheet. They come in different sizes, and are only a buck or less. This one is the same size and a regular sheet of paper, and it’s very thin. It packs up really small and will tuck into my backpack easily. As you can see, it starts a fire easily and would be good for other tasks such as cleaning a wound, removing a tick, removing a splinter, reading small print, or melting plastic army men.