This Tetris Heat Changing Mug ($14.99) from Vat 19 will make the perfect gift for any old-school video game enthusiast for also happens to love drinking hot beverages.

According to the mug's manufacturer, the blocks printed on the heat-sensitive coating stay vibrant for up to 30 minutes. That's more than enough time for you to finish that cozy drink before going for another refill. Here's a demo of the mug in action: