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I'd like to see them do a temperature controlled kettle or possibly a coffee machine, though I understand kettles don't get used so much in the U.S. due to the lower voltage.

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It seems like the important metric would be the kettle's power output, not the voltage. A kettle running at a lower voltage can still have the same power output (wattage).

My kettle is 1.5kW. I'd be surprised if consumer kettles ran much higher than that.

EDIT: TIL about 3kW European kettles and what I'm missing out on.

Most kettles in the UK are 3kW, which is right at the limit of how much you can draw from a regular socket with a 13A fuse.

Here in the UK, my kettle's a 3kW one (with limited temperature control) and most domestic ones will be over 2kW. By my quick calculations, it runs as 12.5A on the usual 240v supply. To get a 3kW on 110v would draw over 27A which would likely be impractical for a standard kitchen appliance.

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