Whether you want to be a unicorn, a narwhal, or something in between, Hornucopia has you covered. With Hornucopia, you can horn up your Halloween or Party with style and fun. Enjoy this elastic strap-on horn collection.

Probably works great with rainbow type filaments and glow in the dark filaments. Might also work well with a clear filament and color-changing LED. Printed here in white TPU (Inland 95A).

Use a piece of 1" wide elastic such as this to make the band you'll need to attach it to your head/body.

3MF And STEP files included. Fusion360 file for one of the examples included if you want to mess around with the parameters, too.