Jackery power supply
Something I find really useful for my Five Wide trips is the Jackery rechargeable power supply. You can charge it from another generator, the car, their solar set-up, and from AC. I have the 500. They have various sizes, and now there is a 1000. No gasoline involved and no noise.
Great for recharging phones, camera batteries, running my 12 volt blanket, etc. A regular electric blanket would run it down in a hurry, but my 12 volt blanket shuts off in 30 minutes. A heater would run it down pretty quickly also. I'd love a 1000, but the 500 is a good size for where I have it sitting. The solar would be nice, but I live around too much shade, and the Jackery solar is not waterproof.
One can also get cables to recharge your car or trailer battery. It is not a jumper, but recharges in a fairly short time. I have not tried that yet.
@boynextdoor I guess it depends on your needs. I have a Yamaha 2000 gas generator, but I don't have space to carry it, don't like noise, and it's a bit heavy. I use it at home when losing power. It always starts. I've always heard good things about Honda also.
A 1000 gas generator isn't enough to run a refrigerator and appliances, but is a nicer size. They are all costly.
For a Jackery and other brands that can recharge, no noise, no gas, not as heavy. I get by with my 500 watt because I don't run a heater, coffee pot, fridge, or anything else to gobble up power. I'm trying to be a minimalist, I guess, and use the propane stove and cast iron cooking stuff.
I may get some solar panels for the Jackery. RockPals makes one that will work, cheaper and folds smaller. They cannot be left in the rain. Zamp is very costly. I doubt I need solar, but might sometime...
I did purchase a folding RockPals solar suitcase to recharge the Jackery. I only used it at home so far, and it worked fine. It is smaller than the average solar suitcase, less expensive, and I like it. It has various different plugs to use with different chargers, and you can recharge small things like a phone by plugging into it.