Possible Clues:

• Clay workers
• Harry and others
• Ceramic artisans
• Kiln users
• Do such as Beatrix work on the wheel?
• Such as Beatrix, for one, are at work on the wheel
• Workers with wheels
• Do they make pots of money? If so, one does not have to work hard for it
• Wizard's craftsmen using kilns
• They work on wheels