Make it look like a fish is swimming in your cuppa.
From Charm Villa's description of their Goldfish Tea Bags:
A tea bag is cut into the shape of an elegant goldfish – the Goldfish Tea Bag. Goldfish Tea Bags are made via a 16-step process. Nine of these steps require handcrafted skills in order to display the ultimate craftsmanship of the Goldfish Tea Bag. The purpose of such a complicated process is to express the artistry of the Goldfish Tea Bag. When the tea bag is brewed in hot water and begins to swell, the shape of a goldfish begins to form. The mouth of the tea bag is designed with a special cotton thread, Pulling the thread enables the tea bag to move in water. Creating a natural rhythm of moment from the fluctuations of the water. A life-like goldfish appears to be swimming in your tea cup.
Goldfish Tea Bag (via Neatorama)