I use a bay leaf in my bread sauce (but that's a bay tree -and I just buy the dried ones)
Not so much at Christmas though- but chives in a sour cream potato bake.
I've tried those herb pots on the windowsill (but they get those annoying little flies in them) I've tried growing parsley outside (for my guinea-pigs, not for us) but the blardy slugs ate it all.
If you want to do herb pots for teachers, why not do them at the end of term (summer holidays) then they can grow them on outside. Though if they were for eating I'd do them in hanging baskets to stop the slugs'n'snails getting a free meal <<bitter, moi ? >>