I could fit 90% of my survival-related stuff into a 5 gallon Home Depot bucket in the trunk of my car. I know this for a fact, because I literally have a 5 gallon bucket full of survival gear in the trunk of my car right now, (because I’m going camping this weekend, not because I’m a crazy prepper…) It holds everything I need, except for my sleeping stuff and clothes, which just get thrown into a duffle.

It wouldn’t cover consumables like food or water, but it would at least be enough to survive in relative comfort. It’s really just a matter of how off-the-grid you want to be. I have a small saw and hatchet for making firewood. A wood burning stove for cooking and heat. The 5 gallon bucket actually doubles as a camp toilet, (I use compostable bags