When the substitute teacher is wanting to show the class a video Milo points out that the school doesn't have up-to-date equipment he brings out a zoetrope Melissa also brings one out saying that "no one can figure out what this is" the moving picture is of Klimpaloon that is the magical bathing suit from Phineas and Ferb (2007)
Ming-Na Wen and Brett Dalton starred in Marvel's Agents of S.H.I.E.L.D. together