I’ve never found one. I just use two large ceramic dog water bowls so they can’t kick them over and if one gets mucky, there’s always the second. That said, my rabbits are strange. They have one bowl in the shed and one in the run. The one in the run will sometimes get some of the algae from the roof of the run washed into it, or rainwater in it. They very rarely drink the water in the shed, preferring the run water. I’ve even seen Willow go out in the rain just to have a drink and then hop back inside straight after...