My favorite has been a stovetop toaster (e.g., [0]), when I've had a gas range. It toasts bread of varying sizes, no need to worry about bread or bagels getting stuck inside it, no dials, it folds up for storage out of the way when not in use, and it's cheap.

[0] https://pampadirect.com/tostador-enlozado-enameled-kitchen-g...