The file 'Backpack Stand/Holder 3D Printer Model' is (stl) file type, size is 57.8KB.
Here is a another holder. Not like we have enough of those here on Thingiverse. I just wanted to make a thing dat has a caracter and is a strong enough.
https://www.thingiverse.com/thing:4441076
For mounting this is only required 2 self-tapping screw, depends in what kind of thing you want to mount it.
Backpack_Holder.stl | 186.7KB |