A fondue pot.
I was thinking throwback and they were definitely popular in the seventies but….
turns out Fondue pots are still sold in kitchen stores and online and there are even electric models.
You might have one on a dusty shelf or in the basement. Or in current use.
There’s a fondue restaurant Melting Pot in Pitttsburgh.
Here’s a cheese fondue recipe
Here’s a chocolate fondue recipe
No double dipping! there are Rules of Fondue

Does this make you want to fondue?