Hi, I may go to CO in Sept and was originally going to drive. If that was the case, I'd have no qualms about bringing back some aromatic herbs in my vehicle. Now my wife is not going and driving 900 miles by myself seems like a bad idea. There are some cheap flights. This leaves only two options as I see and both seem bad to me: 1. ship/ mail herbs back to my home. Which carrier, US mail or UPS or FedEx? 2. carry / pack them. Which is better, in a checked bag or in a carry on bag? I don't like either of these options. Thoughts??