For fondue you can quite literally get a small heater and pre-made cheese that will melt at the temp.the heater is set to. My parents spring for the fancy one that did chocolate as well when I was a kid

Making it from scratch is pretty easy too, honestly, it’s like making a cheese sauce for Mac and cheese but you do it in a pot, add wine, and use a different cheese. If you can boil 4 ingredients together and mix, and find some bread to dip it in, you’re golden