love that in the show the djinn happens because geralt's running away from his problems and wants to use a wish to help him sleep instead of facing the responsibility of his child surprise but. in the book it's because him and his Dipshit Best Friend™ were hungry and trying to fish up breakfast

Geralt brings back all sorts of pretty feathers that he finds on his travels to Dandelion and his hat. So much so that it becomes a bit of a game in Oxenfurt to guess what kind of feather Dandelion has in his hat at any given time. Egret feathers are a favourite guess but won't get you much coin at the gambling houses, the much rarer Griffin or Cockatrice feathers are a risky bet, but Dandelion always looks particularly happy when that happens as it means his witcher has visited.