Make some pancakes using a pre-made pancake mix by shortening and dry milk.
Use a biodegradable trail-marking tape while hiking.
A hand washing base:
You can use an empty laundry detergent dispenser as a hand-washing and fill it up with water.
For Single-use packets, cut a straw and fill the pieces with some antibiotic ointment and seal up the ends using a lighter.
Add a lot of sage to your campfire to keep mosquitoes away.
(H/T : buzzfeed)