Charlie and the Great Glass Elevator

The imaginative gadgets and fantastical elements really make the world stand out. I wonder if Dahl drew inspiration from real science or just let his creativity run wild.

Some of the jokes and situations felt more mischievous or cheeky. Was that intentional to appeal to older kids or just Dahl's style evolving?

The characters like the Umpa-Lumpas and the eccentric inventors add so much flavor. Which characters did others find most memorable or funny?