I'm looking for some low-maintenance houseplants that do well in low light
and low humidity,
Edible herbs or spices would be especially nice

First of all, hardy is not the word you want. In plants, hardy means
cold-resistant, which is not relevant here.
For your situation, consider philodendron, aglaonema (Chinese evergreen),
pothos (Epipremnum), and aspidistra. Unfortunately, most herbs are sunlovers
and would not do well. Even so, your plants might benefit from being outdoors
in the summer.
Iris,
Central NY, Zone 5a, Sunset Zone 40
"If we see light at the end of the tunnel, It's the light of the oncoming
train."
Robert Lowell (1917-1977)