I have no idea what you call it except that I can only logically conclude that it’s called either a ticket skewer or a ticket holder. You can buy them individually but the gf loses it all the time. So I made one, all seven of them in a grid. Plus, I don’t know where you would buy one. Office depot? Who knows! It cost me 8.50USD. Not bad for time spent. I think I did a damn fine job!