Did you know that buttercup flowers track the sun on cold days like mini golden satellite dishes? They can warm up this way by more than 3°C. This makes the perfect excuse to treat yourself to a Buttercup Small Mug for when cloudless days arrive at last. Sit on the kitchen doorstep, with your hands cupped around a hot drink in your mug, and lift your face to wherever the sun sits in the sky to enjoy some spring warmth.