Who doesn’t love a coffee mug with a clever saying or hilarious cartoons printed on it. These heat changing coffee mugs range from funny to just plain awesome. Econoled Tech Battery Color Changing Thermometer Heat Kruzhkus Mug Sensitive Porcelain Tea Coffee Cup This microwave safe porcelain mug is heat sensitive but not recommended for use in the dishwasher. It comes in an attractive gift box and is a great and funny novelty design. Coffee or a hot drink in the morning is just what it takes to recharge your batteries. Buy Now Sad/Happy Morning Picture Changing Mug If you’re anything [More]