You may already have known about using tea leaves in composting or to revitalize your garden or indoor plants (place used leaves under plant/ dirt. But if you've got no plants to worry over, you can still use your leftover leaves for good!
USE THEM TO REMOVE ODORS
Have you had a trouble with getting rid of the smell of garlic or fish from your hands or cutting boards? How about your garbage disposal? Try getting rid of smells this way: 'wash' your hands with spent green tea leaves, then use them to scrub your cutting board. When you're finished, let them sit in your disposal for a few minutes and then grind and rinse.
PREVENT RUSTING
...on your cast-ironware by wiping it with used (wet) tea leaves. Tannin in tea attaches itself to iron, and creates a thin protective coat on surfaces.
COOK WITH IT
Use your previously-steeped leaves in cooking. Dry the leaves, grind them, and use them in recipes calling for tea — green tea coffee cake, ice cream or biscotti. They'll have a mellower taste than the unbrewed kind. Delicious.