a medallion that once per day can summon a single pigeon. Just a regular pigeon, not one thats trained or anything. They released it into a magical time warping labyrinth and now they hear its coos echo through the halls anytime they use it for fast travel. At a party in the faewild, everyone got drunk, the pigeon exited the dungon and ripped of some mane from a unicorn and later the players managed to get it to use as a material in making a god killing sword