Cleanup shouldn't be that difficult. If you wait until the tea dries up you can sweep it off of any surface it may have boiled over on.
Market Spice tea is a great cinnamon tea. The company itself I used to do mail order from, but I think that put them in too much competition with their commercial customers. When I search on "Market Spice" it says their products are available through Amazon.
Micca was my daughter's secret Santa one year, and he sent (and got us hooked on) Yorkshire Gold in tea bags. One bag of that is strong enough for an entire pot. It's way too strong for a single cup.