Headphone mounted cat ears.

thingiverse

Should be compatible with all headphones. If they are too big/small, there is no problem scaling them to an appropriate size. You will also need some kind of rubber bands to attach the ears to your headphones. I recommend using hairbands as it doesn't catch your hair easily. Mounting: 1. put the hairband on the two front hooks. 2. put a finger on the rubber band and drag it so it is shaped like a triangle 3. pull the rubberband under the headphone band attatch it to the back hook.