Are there any crockpots that do not plug in?

Yes, there are non-electric alternatives to traditional electric crockpots, such as stovetop slow cookers and thermal cookers. Stovetop slow cookers require a heat source like a gas or electric stove, while thermal cookers use insulation to maintain heat, allowing food to cook over time without a direct power source. These options provide similar slow-cooking capabilities without needing to plug in.