Any location that offers chemical supplies.
Any location that can supply food, like fruit tree patches.
Any location that offers some kind of fossil fuel.
Any place that contains or offers medical supplies, equipment or gear.
Any location that does not fit into another category.
Any location that is related to power supply, for instance generators or solar plants.
A rural shelter. Anything that is extremely well defendable.
An urban shelter. Anything that is extremely well defendable.
Accessible water sources, like wells and clear water reservoirs.
Any location that offers melee or ranged weapons and/or ammunition.
Any location that offers workshop services, like service garages.