A Barney plush especially made to interact with the film was manufactured and caused much controversy because the voice of the doll would let out a violent screech of loud static occasionally.
At Miss Goldfinch's house, while singing "What's Inside It?", Miss Goldfinch suddenly throws the egg into the air...even though it was on the other side of the room (and not in her hands) an instant before.
Barney and his friends visit a carnival midway which is just being set up, and talk to employees. The general public isn't there yet. Suddenly there's a rainstorm which forces the group to take shelter in a tent. When the storm ends, they go back outside to find a midway packed with people...all of whom must have arrived during the storm, and all of whom are bone dry (and standing in bright sunlight).