Victron makes a great inverter. https://www.amazon.com/Victron-Energy-Inverter-Phoenix-1200W/dp/B07P7RNRJ5

Or...

What I did in my hybrid Sienna is I got this DC-DC converter to limit the amount of amps my system pulls at a time. https://www.amazon.com/Orion-Tr-12-30A-Isolated-Charger-Booster/dp/B07ZKG396Y

I use that to charge my Goal Zero Yeti 1000x. It runs my fridge 24-7 as long as I drive every few days. It can run the 40w fridge, 700w microwave, and 700w teapot all at the same time! And without turning on the car.

It also has a built in 600w mppt solar charger and a 120 watt AC charger brick.

https://www.amazon.com/Goal-Zero-1000-Watt-Hour-Lithium-Battery-Power-Inverter/dp/B096ST3VMS

If you don't want to get spendy, try getting whatever inverter Harbor Freight has.

$50 700w microwave. https://www.homedepot.com/p/Magic-Chef-0-7-cu-ft-Countertop-Microwave-in-Black-with-Gray-Cavity-HMM770B/305708068

If you want a really good one, Victron makes quality power conversion hardware.

https://www.amazon.com/Victron-Energy-Inverter-Phoenix-1200W/dp/B07P7RNRJ5