I posted this 3 years ago, but I figure I’d check to see if anyone new has an idea!
Probably 15 years ago, I shattered my dad’s favorite coffee mug. He was bummed out about it, and I’ve been looking for a replacement ever since.
It was one of those heat activated color-changing mugs. If I remember correctly, when you poured coffee in it, the christmas tree would light up and flames/smoke would billow out of the top fuel dragster(s?). I’m pretty sure the cup itself was black.
I have no idea if anyone else has even seen one of these, let alone know where I could get another one (I’ve been scouring the internet about once a year looking for one). But I figured I’d ask. You never know what you’ll find on reddit! If you have one in your cupboard, I’d consider paying considerably more than it’s worth!