Hal Roach and Walt Disney were good friends, and it paid off for Roach in this picture. Roach asked to borrow the tune "Who's Afraid of the Big Bad Wolf?" from a Disney cartoon of the previous year, and Disney obliged.
As the wooden soldiers approach the Boogey men, Barnaby is holding Bo Peep in his arms, but when they fire the cannon shot that knocks him down, she is gone.
When Stannie rings Barnaby's doorbell at night, a light appears in Barnaby's upstairs window. The light source comes from the right, but Barnaby appears from the left, carrying a candle.
At the very end of the song "Never Mind Bo-Peep" (just after the crowd disperses, and only Tom-Tom and Bo-Peep remain), Tom-Tom is wearing a ring on his right hand (perhaps a wedding band?) It disappears when he sits down next to Bo-Peep, and isn't seen again for the rest of the movie.