The framed picture of a single sailboat that was removed and replaced with a mirror in the previous episode, ("Serena's Youth Pill") has been returned to its spot on the wall in the hallway entrance. It should be noted that there was always a mirror there, long before it was replaced by that framed picture.
This episode is a variation of the very, very similar Season 5 Episode 11, "I Don't Want to Be a Toad, I Want to Be a Butterfly", with a lot of Season 4 Episode 26, "Playmates" thrown in for good measure.
Five episodes earlier, Jeanne Arnold - who plays Maude Hickman in this episode - played Martha Norton in "Samantha's Magic Sitter" .