I'm too lazy to design cat ears myself, so I downloaded the original model. But I hated the idea of gluing them to my headphones, so I made a removable version using rubber bands. Of course, the crappy rubber bands shown above are just to better demonstrate the fixing mechanism. I highly recommend using something more similar to the last picture.

Simply wrap one end of the rubber band around your ear, and hook the other end to a needle at the back

I also suggest that you adjust the size of the model in the slicer to make it more suitable for your headphones. Ideally, the height of the ear in the printing direction

It should be able to fit well on most headphones, but the curves might not match perfectly.

I hope you like it!