Curious George (2006)

S5E15 Go West, Young Monkey

The Doorman requests a western-themed town for his model train setup, prompting Steve, Betsy, and George to lend a hand while he works. Hundley oversees their efforts. When they accidentally drop a tiny pin from the train track into a flower pot, they must excavate all the soil to locate the lost piece. As this unfolds, Hundley drifts off and dreams about adventures in a real western town. In his dream, George invents a clever sifting tool to help in the search, but ultimately, it’s Hundley’s sneezes that lead them to the pin.