Unfortunately, coffee doesn't stay hot. At some point, you're going to reach for that freshly made java and it'll be lukewarm. But things don't have to be like that! There's a much better way, we promise. Arm yourself in the fight against cold, stagnant coffee by investing in an electric mug warmer. To make your shopping journey easier, we've rounded up these top-rated mug warmers to keep your coffee or tea toasty all season long.