Ever since we had a rat problem I have put kitchen waste in a plastic dalek on a solid surface. I considered a hotbin composter but when I realised they are not actively heated just well insulated I asked my husband if he could think of a way to insulate it.
His solution. He has placed the dalek in the centre of one of our empty compost bins and turned the garden compost in surrounding it, using the garden compost to insulate and heat the kitchen waste. It is toasty in there!