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.

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....

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

Do you care if the plastic is on the outside? I've got a Morphy Richards one that is all metal except for the handle.

Edit: and also the little transparent bit where you see how much water is inside. Hard to make that out of plastic or wood. The electrical cable also contains plastic but that seems important.

Edit edit: Now that I think about it, a 100% metal electric kettle sounds terrifying.

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