Wendell

Wendell is a wallpaper selling walrus who will show up in your town on Saturday/Sunday at a random time of day. He is so hungry, that you must feed him, & the only thing you can feed him is fish. As a reward, he will give you wallpaper for free. All his wallpapers match one of Saharah's carpets, so if you want a set you will have to talk to both of them.