you have some really usefull tips there @arbitrarykitten
hope you do not mind me adding some stuff

• get crypto like steemit or lite/bitcoin (it will survive longer then the dollar)
• get a solar powered battery charger (those arent that big)

and I really liked your gardening part... it you mentioned a couple of things i have been writing about as well even if I am not a prepper.
https://steemit.com/homesteading/@felander/how-to-urban-homesteading-create-your-own-garden