There are two other models that serve this very purpose on printables, but I was not satisfied with the way they fit and feel on the tap, so I modeled a new one from scratch.
To install, just remove the rubber o-ring and slide the extension on the faucet. It is a tight fit so you might need to adjust your printer slightly.
Prints very nicely with Fuzzy Edge on the outer side.
Original project in onshape: https://cad.onshape.com/documents/ee22fdc009f7eb56ac11d726/w/fc665729056cd0cac252e704/e/1a9
The author marked this model as their own original creation.