Indeed, for me, a 110 volt AC power inverter is enough for camping. I also had an old one that couldn't give enough power for such needs. And I found a new one on
10 Best RV Inverter Reviews 2020 – Expert Buying Guide. Indeed, there are many models for an affordable price. My friend decided to make an inverter by himself and he suffered for half a month until he collected everything for it and after all, it worked badly and there were crashes. Honestly, I don't understand why spend so much time, nerves and energy if you can buy a new and better one for a democratical price.