mine are all partial to the 'road refresher' dog water bowl!
I had it in the house for a weekend whilst before returning it back to the car, and the three of them kept walking over and looking crushed not to find anything....
i ended up just buying another bowl and it is now a permanent fixture in the living room. chloe insists on trying to cover it up EVERY TIME before she drinks, and again afterwards in case i might happen to take it away....
cats do have their actual water bowl only about 7 feet away and on a raised platform, but obviously the road refresher is MUCH better.