Portable herb garden?
Yes, please!
There's no stressing enough the value of fresh herbs when you have grown tired of putting Adobo and Montreal Steak Seasoning on everything left in your nasty 'refrigerator' towards the end of a trip... try finding fresh herbs of the sort you're accustomed to in port, lol... and we all know that anything you put into the boat's icebox comes out as unidentifiable mush within jut HOURS haha... reminds me of Jerry telling Elaine while she is apartment-sitting... :And NO SOFT CHEESES of ANY KIND!!!"
Just check on agricultural guidelines if you are leaving the country or going to Hawai'i, where farm products are inspected and quarantined or seized to prevent spread of disease into a fragile ecosystem.

I'd look at prone varities of herbs- creeping lemon thyme, creeping rosemary, etc. because they naturally grow quite flat and thus are perfect for LED culture.

It will be a really welcome addition to your cabin, having a visible herb garden with cheerful lights to putter with and trim, on those grey days when you're becalmed with nothing to do and there's not a square centimeter of the boat you haven't already cleaned twice... I think it's a GREAT idea and I really hope you will share it with us!

When I was working in Alaska on the commercial fishing fleet, I came very close to buying a liveaboard and renting a mooring in Seattle. If I'd stayed on the west coast, you guys would never have met me because I'd be that crazy lady who lives on a sailboat with a fat bulldog and potted tomatoes on the deck, and only works just enough to pay for supplies and marina fees, lol.