I saw this somewhere, probably on Pinterest, and decided to give it a try after I drank the last little bit of icy cold milk. I love milk. But I digress.
Clean out the water jug. Poke a bunch of holes in the lid. Fill the jug with water and replace the cap. Don't hot glue the lid or you won't be able to refill the jug with water. The holes I poked in the lid weren't perfect so I ended up with a jumbled up stream of water, but it serves its purpose and it was free. I'll see if the kids want to decorate it or make their own.