Ariel's room at Castle Mystacor is a reuse of the background for Teela's bedroom in the Royal Palace of Eternia as seen in The Starchild (1983) as well as the room in which Prince Adam and Princess Adora were born in as seen in a flashback in He-Man and She-Ra: The Secret of the Sword (1985).
The animated sequence of She-Ra picking up the ground and rolling will be seen again in Loo-Kee's Sweety (1987).