There is a lot of good survival information on this website, both in the forums and in the knowledge base. Big picture, what you need depends on where you are flying. I don't carry the same amount of gear in Arkansas that I would carry out west or in Alaska.
From a survival perspective, always "dress to egress." I knew an instructor in Alaska that forbid students from using the aircraft heat in the winter. His philosophy: if you need the heat, you aren't wearing enough clothes.
In general, Rule of 3s. You can survive:
-- 3 minutes without oxygen
-- 3 hours without shelter (ie appropriate clothing at a minimum)
-- 3 days without water (particularly applicable if you're flying south out of Provo??)
-- 3 weeks without food.
In addition to survival, be able to take care of the airplane. At a minimum, I always have tie down ropes, a tie down kit, and control lock in the airplane.
Finally, be able to get help. Some type of sat phone or satellite communicator is a great item to have, as is a good 406 ELT. Cell phones can sometimes send a text even if you can't place a call. Older school but still potentially valuable are a handheld VHF radio and a VFR flight plan filed and opened with FSS or someone you trust.
Last thought: keep your machine well maintained and do your best to make good risk decisions. That's my number one tactic to keep myself from having to use the stuff listed above!