Video here: https://www.youtube.com/watch?v=zc8fa59W5pk
I wanted a proof-of-concept that my kitchenaid attachment profile works, so I remixed nagylevin's unicorn horn to make it smaller and rotate! Tested on a Kitchenaid Professional 5 Plus, but it should work on most or all kitchenaids.
EDIT 1/13/2019: retooled the large attachment to reduce delamination at the base of the horn. Should work better now!