The picture below shows a tea incense burner called Cha-Koro. It is similar to an aroma diffuser. The only difference is tea leaves. The leaves are used instead of essential oil.
When you light a candle in the pot, the scent of tea comes to spread, making you feel relax. And besides, lighting “tea incense” helps remove odor for rooms since tea has disinfectant and deodorant effects. Tea can be a drink, food, and an aromatic. It is versatile!