About this 3D model

This is a small stand for a set of headphones that fits into a wall of slits/slots that I have in my cubical at work. There is a small angle on the stand to stop the headphones from sliding off. Need another accessory for a slot wall?(Barcode Scanner):https://www.myminifactory.com/object/3d-print-barcode-scanner-gun-holder-for-slot-wall-78963