Duck Disguiser
Source: Quest. "Fun" fact: the unlockable duck colors are NOT ACCOUNT-WIDE and if you haven't done the questline on an alt character they get NO OPTIONS when using the toy, making it effectively useless.
The 
Duck Disguiser is a toy obtained from a quest during the Noblegarden world event that allows you to disguise yourself as a duck in various unlockable colors.
Guide awaiting review
Complete Noblegarden Questline
Participate in the Noblegarden world event and complete the associated questline to obtain the Duck Disguiser toy and begin unlocking duck colors for that character.
Unlock Colors Over Time
All duck colors for the Duck Disguiser are unlocked over the course of six years of Noblegarden participation, with progress tracked per character rather than account-wide.
Tips
Duck color unlocks are character-specific, meaning each of your characters must complete the Noblegarden questline independently to have any color options available when using the toy.
