The least you could say is that the designer duo behind YAWN chose a quite enthusiastic name for releasing their illustrations and prints. The acronym YAWN means Yeah Awesome Wow Nice. Hard to do more joyful.
Based in Dortmund, Germany, Annika Janssen and Sandra Greiling create beautiful typographic compositions with a nice handmade look-and-feel. The complimentary illustrations often communicate joyful messages that will cheer you up. You can see a few of their prints in this post, but do check out their Society6 shop for more.