"Ocean in a Bottle". INGREDIENTS: clean, empty individual soda or water bottle for each child - label removed, and child's name pre-written on cap with Sharpie marker; vinegar (enough to fill 1/2 each bottle; for example, for sixteen ounce bottle you would need 8 ounces of vinegar for each child); vegetable oil (enough to fill 1/2 of each bottle); funnels (at least one for every three kids. The ideal would be one for each child.); glue or hot glue gun; optional are blue food coloring (a few drops can color the whole batch of vinegar), glitter, plastic sea life beads that are small enough to fit through the bottle opening, and/or small shells that will fit in opening. DIRECTIONS: Have a bottle at each place with the oil already measured out and poured in. Have the vinegar (already tinted blue, if you're doing that) pre-measured into paper cup at each place. The kids get to pour the vinegar in (and watch the oil rise through it to the top). They then can add any embellishments you might have -- beads, glitter, shells etc. Then have them take the bottles over to a glue station where an adult glues the caps on (so when the children play with their ocean there are no leaks).