Dan!

This is what we use for most of our water dishes. Ceramic ramekins come in a variety of sizes, are heavy so they don't tip easily, are easy to clean and see if they are dirty, being pure white, and are dish washer safe so can be sterlized that way if need be. You can find them at dollar stores, department stores and most any restaurant supply or big box type store.



Unless your tap water is nasty for some reason you really don't have to use bottled water and should never use distilled water.