These 8 green tips on used tea leaves is from the site Green Living Tips which explains about how tea can affect the environment.

Uses for used tea leaves

• If you do use tea bags, instead of throwing them into your household trash bin – they can be composted or added to a worm farm.
• I’ve seen dried tea leaves suggested as an incense (although in my opinion, burning tea leaves smell pretty bad)
• Following on from the last tip – burning tea leaves is said to repel mosquitos (that I can believe)
• Dried tea leaves can absorb moisture in cupboards and odors in refrigerators
• Tea leaves sprinkled in kitty litter can help reduce smell
• Remove oil from pots and pans without impacting on their “seasoned” aspects
• Dried tea leaves can sop up oil spills in the kitchen.
• Soak old tea bags in melted wax to make firelighters