I was going to say, counter top dishwasher.
Even with only a little rear kitchen pod rinsing out the frying pan and mugs is annoying.
On the more serious side I've never really got taking high power mains devices off grid, it's sort of what I go off grid to get away from. I'm not a luddite in the area, 20 years ago we had the narrowboat fitted with the (then outrageous) 1.5kw inverter/charger and 15 years ago I was doing canvas tent camping reenactment with a gel lead acid power pack with 300w inverter (funny how all the purists would siddle over when their phones went flat). If the lights stay on, the milk stays cold and the 4G/phones/laptop stay charged I'm good.
That said if we ever reach commodity levels where I can drop in a system to run an induction hob without concerns and get rid of the gas stove from the pod I'm in. And we're possibly very close to that...