Only you can answer your question as everybody's different in their needs/wants for appliances. Start out bringing what you think you might need and after a while you'll discover what you don't really use and start eliminating things.
We basically bring a large Bodum French Press, and that's about it. Everything else we chop/blend/mix by hand. We have a nice Waring Belgian Waffle maker that we bring from time to time if we we have shore power, but don't normally carry it in the trailer as it's rather large and heavy. You'll find you can "custom tailor" the things you need depending on the trip and what hookups you have.