Some critters will do well with a bowl and this helps you to keep track of whether they are eating the food or not. Some other animals will just toss the food out of the bowl before eating it and there's no real point. When you do buy a bowl, get a ceramic one. They'll gnaw the plastic one eventually and even if they can't reduce it to nothingness, the rough edges will be a haven for bacteria. The metal ones are too light and will be tipped over.
Water is another concern entirely.
Vacuum will be the main thing keeping water in the bottle, but the ball-bearing will help keep detritus out of it, and in general they leak a lot less often. You will also need a holder for the bottle if you are using a fish tank, most particularly you will want one that protects the bottle from gnawing at the top and bottom. You cannot use a dish for the water. Let me repeat this. You cannot use a dish for water.