Free: Contests & Raffles.
Lots of great info already stated...so the only thing I will add is to put a road flare in your day pack (I carry one vacuum sealed, keeps everything clean as that wax on the flare gets messy in the pack)...IF you get hurt or lost you can start a fire easily and with any wood found, no matter how wet. for clothing and other great stuff, see all of the replies above!Grade
I bought a Personal Locator Beacon (PLB) when I went to Idaho alone, wolf hunting. No fees, but strictly for Search and Rescue. I does not have a way to communicate with family or friends.
I recently picked up the garmin explorer mini, so far it's been good although I didn't get confirmation that a text was sent, it was, but I didn't know for sure that it went out so I was worried everyone was worried about me, and that put a mini damper on my hunt.