Owl to Kevin
Hello Kevin, this is Darwin. I've attached a small bit of owl treats for him so that he would stay long enough for you to write a reply. He's not always very friendly.
I also sent you a bag of Bertie Bott's Every Flavor Bean. They're basically jelly beans but they really do have EVERY flavor. So watch out! I just thought you'd like some wizarding world treats since you said your mum wasn't too nice about letting you look around Diagon Alley.