My first window was a $10 yard sale find paned mirror in 80's pine that I painted and distressed for our basement guest bedroom. You can see rhe Pottery Barn-inspired Pine Window Mirror Makeover here.
In January the single paned chippy window was propped in the same spot with a simplified winter decor with whites and mercury glass.
I used the second $5 window frame, and eight paned one, on our porch for a Christmas vignette. In January I removed all the 'Christmas' elements and now use it as a winter vignette.
You can bet I will pick up more if I find them at affordable prices because there are so many great uses for old windows. I'm heading over to Donna's party now to take note of other ideas. Do you use old windows in your decor?