Make your very own color changing mug. Perfect for gifting this upcoming holiday season :) | These DIY Color Changing Mugs Are Super Easy To Make! | http://gwyl.io/these-diy-color-changing-mugs-are-super-easy-to-make/.
Thermochromism makes us happy. Back in the 70s when color-changing mugs were in their infancy, the change was often one swirly thing being replaced by a different swirly thing or a word appearing. Now, however, clever is key, and this fits the bill.