For my Voron 2.4 I use an Voron 2.4 Exhaust Housing, Side Tube Entry (https://www.printables.com/model/396106-voron-24-exhaust-housing-side-tube-entry).
I already had some optical sensors which can be used as Optical hybrid filament out sensor (https://www.printables.com/model/258381-optical-hybrid-filament-out-sensor).
To connect both parts together, I created a bracket.
The author marked this model as their own original creation.