This is only really relevant for people who are at least moderately obsessed with tea.
All I do is write the name of the tea on a ribbon which can then be easily removed and stored when you want to change it. This allows you to use the same 4 or 5 jars over and over as you use up different teas and buy new ones.
Find some old jars (or buy some if you don't have any). They must seal around the top so that the tea doesn't lose it's scent.
Wash them out and make sure they dry completely.
Wrap the ribbon around the fattest section of the jar and cut so there is a 2cm overlap.
Write the name of the tea in the middle of the ribbon in a fine-tip permanent marker.
You can then sticky tape the ribbon on with one piece of tape running vertically at the back.
This can then be easily removed when you want to use the jar for something new!