They deduced toasters would be afraid of things like forks and falling into the bathtub while plugged in, so they included them in this sequence. Oliver described the transition from bathtub sparks to lightning outside the house as proper filmmaking. Similarly, Blanky being a certain shade of yellow bears significance to the plot. In the beginning of their journey, the other characters dismiss him, even Toaster. Then Toaster encounters a flower that is the same color, who also wants to snuggle. After explaining it is just a reflection, he walks away, thereby making the flower wilt. The next moment shows Toaster proactively rescuing Blanky. The idea is that the flower informs Toaster that his actions will make Blanky wilt too.