You'd be surprised at what you CAN keep inside during a freezing winter. Where I am, almost all plants do well outside, with very few freezes over the years. And I agree that cuttings are easy to do, just slash down on the bottom 2 inches of the stems twice with a potato peeler, and stick in water or dirt. If any weeping willows are near, get some of their cuttings and they will root themselves and other plants faster than you can imagine. My husband used to do that with very expensive plants that did not root easily, even with rooting chemicals/hormones.
There are lights that mimic the sun with all the color rays, they will be good for you as well as the plants.
Or a bright window that faces south or SE or SW, just revolve the plant when you see it bending towards the light. Sometimes the plant just hates it where she is and will bend towards the place she wants go to, so put her there and she will thrive.
Two books to read that I would strongly suggest are " "The Psychic Power of Plants" by John Whitman, (my late Nurseryman DH's favorite, the very unforgettable (and my absolute favorite) book, "The Secret Life Of Plants" by Peter Tompkins and Christopher Bird. And while you're on this subject, check out a book called "The Hidden Messages in Water" by Masaru Emoto. I think these should be on any plant and health lover's book shelves.
Okay, now I'm off my soap box...