You need a clear water bottle. I used a five gallon water bottle. You will need to select objects to use as the objects you will find ("find its"). I have selected 20 "find it" objects. Each object must be able to pass through the opening in the top of the bottle. If you can't find anything you want use as your ("find its") then just get a rock and spraypaint it blue or green or red you can choose any color you want.