In my enclosure I use LED lighting that is controlled by my Octoprint Pi that is powered by the Einsy Board. I did not want to power the led's from the power supply for the printer so I needed an extra passthrough on the bushing. Should work with many other use cases.
Feel free to tinker: https://www.tinkercad.com/things/l92yEITno97-dual-cord-bushing-for-lack-enclosure
Printer Brand: Prusa
Printer: I3 MK3S
Rafts: No
Supports: No
Resolution: 0.20
Infill: 15-20%
The author remixed this model.