I hate to say it, but my honest answer is probably battery power. Even with the mobile grid down, I still feel like I’ve got a load of rechargeable devices that could turn quite useful in the apocalypse. Even just plain AA and AAA batteries would be more valuable than money.
A portable solar generator and batteries would be very valuable. Smartphones are immensely useful even without internet access. You could even get a meshnet going for medium-scale communication if other people in your area are similarly equipped. No power grid required.
I hate to say it, but my honest answer is probably battery power. Even with the mobile grid down, I still feel like I’ve got a load of rechargeable devices that could turn quite useful in the apocalypse. Even just plain AA and AAA batteries would be more valuable than money.
A portable solar generator and batteries would be very valuable. Smartphones are immensely useful even without internet access. You could even get a meshnet going for medium-scale communication if other people in your area are similarly equipped. No power grid required.