In most campgrounds, you can't run your generator before 10:AM, That sorta rules out the electric toaster on the generator. It also rules out the electric coffee maker and the microwave oven. We do all that from our 2, 27 series deep cycle batteries. Of course, we have to run the generator for 8 hours to make up for it. I put the generator in the shell in our P/U. You can hardly hear it run.
We run our electric toaster off of our 2500W inverter. It only draws 1500W for about 60 seconds. That's only 25 watts.
Of course, if you don't have an inverter, that's another issue. We love our inverter and wouldn't be without one again. It also makes a nice place to stow our extra awning brace.......