This is a crown/bob add-on for the Bullseye Duct: https://www.thingiverse.com/thing:2759439
Note: I have only designed this for the Ender 3 Pro version of the Bullseye. It will likely need to be remixed for use on other printers' versions.
Purpose:
The author marked this model as their own original creation. Imported from Thingiverse.