You won’t find an electric kettle without plastic as the power cable and some other shielding will be plastic at a minimum.

If it’s just that you don’t want plastic “touching” the water then you’ll find a few models around.

I don’t have any plastic in my cooking gear for camping, so that could be a good start.

Aarke. But be prepared for a heart attack with the price.

Stove top kettle

Camping kettles are generally made entirely of metal.

I suspect you're not gonna get complete plastic free off the shelf down here - even a stovetop kettle has a plastic whistle and handle. If you want to support Australian companies, the breville glass / stainless steel ones have minimal plastic (mostly in the hinges, handle and some base moulding).

Otherwise there's the Saki Luna (entirely stainless steel), Bella do ceramics IIRC and last I saw Ascot were doing some exciting things with glass and steel....

I found an all metal IKEA induction kettle in the opshop for $2. I think it's the VATTENTÄT. E: mostly metal.

e: There's also just a simple saucepan with lid on the stove.

There's a nice breville one that only has plastic in the on switch. Body is glass and metal