What's a good, low-maintenance option for a small herb garden/grow box?

[Jilly_in_VA]

7. Here's what I have in pots on my upper deck

which my husband refers to as the "sky garden":
in a hanging basket together, creeping rosemary and creeping thyme, which I'll bring inside come winter.
Chives--they have been coming back in the same pot for at least 5 years.
Mint (spearmint)--also a returner, by itself in a big ol' pot. I leave it alone and it doesn't bother anything else.
Greek oregano--the stuff shocked me by coming back this year, and I divided it and gave half to a friend.
Basil--replant every year. Just regular sweet basil, no fancy stuff. Last year I had lettuce-leaf, and the bugs liked it too much.
Thai Basil and Par-cel (cutting celery)--in the same big pot. Par-cel is something I never heard of untilI started buying my herbs from the local greenhouse, but I love it. The stalks taste like celery and the leaves taste like regular parsley.
Italian (flat leaf)parsley and sage--in the same pot. The parsley doesn't need re-planting the way cilantro does if you cut it from the outside, apparently. Sage is sometimes a returner but wasn't this year. (I left it outside)
Hyssop--just grown "for pretty" as my Mennonite neighbors say, it comes back every year. Apparently has medicinal properties.