Knife--Leatherman Squirt with both pliers and scissors, 2 oz. I need the pliers because I don't have much strength in my fingers.

Fire starter--Esbit tab I rarely build a fire, especially since prime backpacking season here corresponds with the dry season when fires are usually prohibited.

Ignition source--mini-Bic, book of paper matches (both work fine for my stove), half a dozen of those REI emergency matches which seem to burn forever.