I designed a second holder to aim an old phone's camera (Samsung Galaxy A8) towards the print bed. It mounts on the left extrusion with an M4 screw.
0.6mm nozzle, 0.3mm layer, PETG, Sovol SV01
The phone holder on the front extrusion for running OctoApp can be found here:
Phone Holder - Octoprint by southbaygsr | Download free STL model | Printables.com
The author marked this model as their own original creation.