I used the Twisted Spiral Horn Generator from ricswika
These are the settings I used to generate it:
Resolution: 50
length: 80
spiralR: 15
startR: 17
endR: 4
rotations: 1
segments: 61
I added a slot for a 20mm velcro strap.
I bought it from amazon (not affiliate) but you can use any 20mm strap.
Organic supports (only touching buildplate) works fine.
The author remixed this model.
I used the generator to get a random shape I like and inserted slots for velcro