What is your decor style and where are you putting it? That is the first consideration.
Put mirrors in them. Put photos in them. Paint and distress, unless they are already beautifully distressed and just hang without anything.
Hello Joyce! here's 100 ways to use and display old windows! https://www.remodelaholic.com/how-to-use-old-windows/4
I have had two or three of them stacked against my fireplace, I have decoupaged pretty pictures in the glass, I have hung them on the wall with photos or prints behind. I have also just place long transom ones on my fireplace. It all depends on your style.
Hi, I have a small old window with the feet, I just sanded it down to get all the old paint off, added some hooks I made out of old spoons then added a piece of wood to make a shelf.
Here is a shelf I recently made from an old window and I love it. https://www.homeroad.net/2017/02/making-window-shelf-with-old-chippy.html