This winter I had to buy a heated water bowl for the bunnies since they resided on my porch all winter and their water would freeze if left unheated. I knew that they were "tippers" big time, so I duct taped the bowl to a plastic cutting board, about 15 x 20 inches. Of course I had to take up the entire contraption each time I wanted to wash it, but it worked. It didn't look very pretty!

Hope this helps.