Thanks, everyone! I'll just go with "From Danika & John" then.
Mint is easy. I just grow the leaves in the back yard, pick them, let them dry (we live in a dry climate, no mold) and keep them in a container.
But actually, I'm not giving out mint tea this holiday. It's going to be vanilla extract. I just bought 3.5 liters of vodka and I've ordered 1.25 lbs of vanilla beans from Amazon.