Hong Kong-based company Inno.Park has created a tea set that makes drinking tea fun and joyful experience. When the metal plates on the bottom of the cups reach 68°C (154.4°F), fishes appear on the heat-sensitive coasters. Watch the video.

FISH Cups and Heat Pads, $50.00 (set of two cups and two pads)
Also available at Inno.Park.