Continuity mistake: When you see Barb back from CostClub she has at least 7 boxes. When she is seen again she has 3.
Continuity mistake: Rusty throws his rattle on the ground, and when Nora and Billy push the strollers to the balloons, it is still there. But after this, it disappears for the rest of the episode.
Continuity mistake: When Phoebe makes the backpack slide it turns around 180° between shots.
Continuity mistake: After the courier trips and falls the backpack moves closer to him between shots.