12v solution
While this may not be an economical solution, I purchased quality 1000W pure sine inverter with heavy duty cables and battery clamps. I just clip this directly on to the battery terminals and I can run the microwave, charge up laptops/cellphones, etc. Cost for this was about $200CDN. We dry camp a couple of times a year, so buying a genny wasn't the best fit. Plus it's noise free...good in some of the parks. For the few times I need to run a coffee maker, or microwave, this does the trick. I usually have an extra 12V batt in the back of my truck, so I am not draining the main batts on the rig. Been stuck before deep in the bush with dead batteries and trying to get the slides in was no fun (also had a bad converter in the rig - and it wasn't a Heartland rig at the time).