Balthazar Cavendish and Vinnie Dakota are given their next pistachio mission: to put support stakes by each plant at a pistachio farm. After taking a look at the map that Gretchen eventually (after time traveling to do it yesterday) left for them, Cavendish asks Mr. Block about Milo. Hearing that without proof he shouldn't care about the kid, Cavendish decides to find Milo and try to discover something about him.
When Amanda points to Lydia having fun for her, the person directly behind Lydia looks like an exact twin of Lydia except for the color of her clothes.
The sign on the front of the door where Cavendish and Dakota get their mission is a reference to the author of the classic book The Time Machine.
During an overview of the gym, a background character, the brown haired boy in a blue and white striped polo shirt, is seen in two places at once. He is seen by the snack table talking of two other kids and on the dance floor with a black haired girl in a blue light shirt.
Additionally, there is a scene where Joni appears twice.
Phineas and Ferb: In the last scene, it is seen people dancing under the notes of "Just Roll with It". A girl in the bottom left is doing exactly the moves from the video of "Zubada", a Phineas and Ferb song.