Most of those should do well next to a south facing window without supplementary artificial light. Otherwise, see http://forums.gardenweb.com/discussions/3282450/should-house-plants-receive-supplemental-lighting-in-winter?n=4

Thank you for responding! Yes, I had read that post already, but I guess it seemed confusing and like more work than I was thinking. I should have mentioned that, believe it or not, I only have one small south facing window. I am in an older established neighborhood with lots of mature trees, too, so I don't get as much light as I could to begin with. I end up frequently rotating plants to different windows and in and out of the room with the greatest light to make sure they all have a chance to get a healthy amount of light. And they seem to be doing really well. Just nervous about winter coming and having the plants too close to the cold windows to soak up the dwindling light. Was hoping there was a simple lamp or regimen that I could rotate around the house to keep them happy. I'm sure they will be fine, though, and maybe I am just thinking too much about it.

Actually just reread the recommended thread, and it doesn't seem that complicated after all. Not sure what I was thinking when I read it the first time. The link to the bulbs on the Home Depot page is no longer valid, but I can figure out the bulbs recommended by the name in the link.

You could use little 3W red 660nm LED lamps for each plant.

Thank you, parker25mv! Where might I find a bulb like that? Standard a Home Depot or Lowe's, or at speciality grow shop or online?

Approx ow often might I want to expose the plants to that (or the above recommended led) light? I'm not looking for specific or especially amazing results. Just generally keep them happy in these brutally cold michigan low light winters and supplement enough light to keep them healthy or ready to take off when spring arrives.