Gridfinity Stand for Dual Shock (PS4) Controller like https://www.printables.com/de/model/708470-gridfinity-ps5-duals , https://www.printables.com/de/model/708458-gridfinity-minimalistic-xbox-controller-stand or https://www.printables.com/de/model/942458-gridfinity-switch-pro-controller-stand .
The author remixed this model.
Just a combination of a 2x4 Tile and the Controller Stand :-)