My favorite tip for right now is this - mist those houseplants! A friend of mine told me that rosemary always dies when you bring it inside because it hates dry environments. So I got an old hair product bottle, washed it out really well, and have been misting all my plants a couple of times a day. I have never had such healthy houseplants over the winter season - no bugs, no loss of leaves, and some are even blooming!