I was drinking a bottle of water and all of a sudden I noticed the inside of the bottle, under the label. It was a perfect diamond pattern for making a leaded window. My daughter thought I was crazy because I'd take a drink, look inside the bottle and then do the whole thing again. You'd think she'd be used to such behavior by now, lol. Anyway, the stained glass window in the chapel is the result of that discovery. The lead lines are just Sharpie marker traced over the embossed pattern. The diamonds were filled in with glass paint.
The Dasani bottle I used also had a lovely embossed border pattern. I didn't notice it until it was too late to save it - but the next time I will figure out a way to use that part, too. Isn't turning trash into treasure fun?