Icicle lights strung vertically behind window sheers - best Xmas decorating idea ever!! Got the idea from pinterest, but think my version turned out better than the inspiration pic (biased ;-)). Used command hooks as well as the curtain hardware to hang the lights; 2 stings per window - don't want to be stingy with the light. I also spent time hooking the "icicles" together horizontally, from the vertically strung wire, to give a more fully lit effect. Ambiance abound!
Bring a little twinkle to overcast skies with the help of some golden tree ornaments. If you use an extendable shower curtain rod inside the window frame, you can hang IKEA ornaments so they don’t get in the way of the curtains. Attach the decorations using fishing line, so they appear to float. And they are really easy to put up and take down