Each kid needed:
- 1 bottle of water (I initially asked for donations of empty bottles, but didn't get enough, so we just bought a few cases so they already had water in them)
- 1 drop of food coloring (any more and it would be too dark to see)
- 25ish drops of oil (probably could have used more, I was afraid I would run out but we never even came close)
- a sprinkle of glitter
I had a volunteer hot glue the tops on once everything was in the bottle.