The Returnwing is one of Hiccup's many inventions. It would be known in modern times as a boomerang.
The Returnwing is a piece of wood bent in a curve shape. It is painted and stylized with swirls, waves, and spots. It is most likely made out hard wood, as it was originally made as a new kind of weapon at the suggestion of Gobber the Belch.
So far, the Returnwing only appears in the first book of the app Dreamworks Press: Dragons. In this book, Toothless is seen taking the Returnwing out of Hiccup's satchel. Hiccup and the player, who are hunting an escaped baby dragon, realize that the Returnwing could help bring it out. Hiccup then has the player use the Returnwing to play with Toothless. Afterwards, Hiccup decides to give the Returnwing to the player, noting that the player was "better than Gobber and I ever were," as well as noting that the baby would like to play with it. Soon after, the baby dragon, a Changewing, is drawn out of hiding and is trained by the player
- Eret is seen with a similar boomerang in the comic, Burning Midnight, as well as in the graphic novel, The Serpent's Heir. It is unknown if these two boomerangs are the same.