There’s the compass. There’s the compass and map. And then there’s survival gear like this Garmin High Sensitivity GPS tool with its GLONASS receiver, 100K topographical maps, BirdsEye Satellite imagery subscription and triple axis compass. The screen is easily readable in the brightest sunlight or deepest night and the 8GB of memory mean you’ll always have the information you need now at your fingertips. If you’re serious about staying out of trouble when you venture into the unknown bring the Garmin High Sensitivity GPS tool with you and rest easy.
To me, the best option is to store emergency food. How much? If you have none, store enough for a few days. If you have enough for a few days, get enough for a week. How much you store depends on what time frame you think you're at risk for having to be completely independent. The early settlers of the southwest liked to store enough food for a whole year and still do to this day!