I work quite a bit away from town and mostly off grid, having a good reliable generator to supply the tools one needs to get things done, electric impact driver, chop saw, 4" grinder, 7"skill saw.
The Honda EU series is a good choice the EU2000 is a little light weight, the EU3500 would be my next buy,
Hi-Lift wagon jack, they will take a chunk outta you if you dont pay attention, very flexable to use, lifted buildings with cheater bar, used as a wood clamp and wire strecher, used to pull steel fence posts.
Petzal LED head lamp
Racheting cable puller (4000#) used for clamping, pulling, hoisting, removing/intstalling motors, used a puller and boat anchor to extract a sno-go from river overflow.