I recently finished making a messenger bag out of duct tape! I took it for a test run and it didn't hold out very well. It was flimsy because there was no rigid backing, kinda floppy like once you start putting things inside it. Still, I'm very proud of it and I've now run out of grey tape... lol It has a distinctive checkerboard pattern that looks really cool. Here's a picture and here's the tutorial link that I followed to make it!