This is a simple and easy to print guitar holder.
You just need two 5mm countersunk screws for mounting it to a wall or wherever you want.
I recommend printing the “strength” version of the provided files since otherwise the cross section area might be too small and the holder will break when hanging a heavy guitar like a bass guitar on it.
Also consider some tough material for printing altough PLA will work just fine (at least for me it did).