Crafting Project: Vintage Windows

I have 2 window panes I gotta do something with. I purchased them at the flea market in Ladson for $5 (both). Charleston is a historic town and has many buildings that are falling apart and vacant. Many people get their windows from the dumpster. I was thinking of painting a picture on the glass like ljcfyi;or maybe turning them into a frame for my quiling projects of the past. I don’t know yet. What should I do?