Tiny Cal Trout blade for a knife. Less than 2.5 inches long--just enough to get through a salami.

Fire starter--lightweight paper collection of Sudoku puzzles!

Ignition source: Multiply BIC lighters.
_________________________
Check our our website: http://www.backpackthesierra.com/

Or just read a good mystery novel set in the Sierra; https://www.amazon.com/Danger-Falling-Rocks-Paul-Wagner/dp/0984884963