Possible Clues:

• Household implements
• They may be kept in the kitchen cabinet, unless it shatters
• Knives and forks, e.g
• In US find amazingly silent pots and pans?
• Enlist cooks in America with sets of knives
• Visiting America, listen out for useful devices
• The Blades staggeringly silent in America
• Knives, e.g
• Knife and fork, e.g
• Domestic equipment silent after breaking in America