When I first saw this piece of fabric, I immediately knew it could make a perfect circular bag. It's much brighter than it appears here - it's actually a bright lime green.
I think it was originally a tea towel or something.
Anyway, I cut it into something vaguely resembling a circle, and then used it as a pattern to cut out some lining. In hindsight, I really should have used a lining fabric which, you know, doesnt clash so hideously.
I sewed the almost-circles together, leaving an opening to turn them right side out. Before I sewed up the opening, I stitched a single button hole in the outer fabric, and used the buttonhole width as a guide to sew a channel all the way around, through both pieces, several inches from the outer edge.
Through the channel I threaded a ribbon for a drawstring, and attached some buttons to the ends to stop the ribbon disappearing inside the buttonhole.
Then I added a couple of handles which in no way match the outer or lining fabric.
And there you go. One sack bag. As experiments go, I think this one was fairly successful! The next one will look slightly less multiple-personality-disordery.