My 2 cents, nothing works quite as well as the Fellow Carter wide mug. It’s ceramic lined, super pleasant to drink out of, and with the lid just resting on top

My 2 cents, nothing works quite as well as the Fellow Carter wide mug. It’s ceramic lined, super pleasant to drink out of, and with the lid just resting on top (not even screwed on) the coffee stays drinkably warm for 2+ hours. No need for any of the warming nonsense.