This is a modified version of a controller stand found on Thingiverse originally made by Brian Denis (laughingdoctor), I've added a slat wall mount that should be relatively compatible with any popular brand of slat wall.

I used:

Layer height: 0.2

PLA or PETG

20% Infill

Minimum 3 perimeters

No supports

No brims/rafts

*I would recommend adjusting the width of this depending on the size of whatever you are trying to mount.