I was not able to find a free file for this item.  I took basic measurements and modeled my own on Fusion 360.  This is a basic adjustable trading card stand made on the Creality Hi.  This was printed on its face with tree supports on baseplate only.  No special settings I look forward to seeing other people's prints. You also have to get M4 Hex Cap Bolt (1) and M4 nut (1).  Please Enjoy!