Recently (B.C. that is = before corona), after shopping some shirts and others clothes, my wife left a few of these plastic clips on the table. As I was just toying around with a packet trick, I was immediately
hooked “clipped” and found them perfect to hold together a small packet of cards. I feel this looks better than an ordinary paper-clip, and it’s also less likely to scratch or damage the top and bottom cards.
I hope you will find this useful, too!