To me, only the electric dryer might be optional because the alternatives are even worse.
A microwave or toaster would be replaced by another appliance, which has its own problems. Toaster ovens would run longer than the microwave. You can have a propane baking oven or propane burners on a stove, but this isn't all that efficient either. Or you can make fire and cook there, just to warm up your leftovers from yesterday. A Microwave or toaster seems like a comparative smart choice.
The electric clothes dryer seems the wasteful bit, since you can just hang the clothes on a drying rack. I haven't personally used a clothes dryer in years. It is most definitely a luxury, even if one has children since folks can just buy a few more clothes to make up for drying time.