I have to keep a bunch (15 or so) 4th graders busy for a half-hour or so with a hand-ons demonstration about herbs/herb gardening/medicinal herbs/etc.

I have some old, dusty dried-out herbs that have been hanging for a year or so. They still smell okay, but I wouldn't ingest them at this point.

Any ideas or comments appreciated. Thank you.

P.S.
Could you please follow up on my pond+aquatic question I just can't get the answer!the names well it says at the top of OUR follow up the one I'm writting right now