I've made an American/Greek variation of a Donair
Seriously, I've never heard of a Donair before, but I make something similar at home. I use sliced sirloin steak instead of the spiced hamburger and put that on top of a pita with chopped tomatoes and red onion. Then I put Tzatziki sauce on that. Its very delish. Maybe not quite the same as a Donair, but super easy.