That pull tab at the very top, with the slots cut into it, on either side of the rivet,... Those made great little flyers!
You'd break the tab off from the pull ring. You could then take the broken off tab, insert it into that slot in the pull ring, pull the ring back, and let it go. It would take off and fly for a good 20'+. They'd fly like a mini-Frisbee. I shot a lot of those things off as a kid.