Jar or bottle; vegetable oil or baby oil; water; glitter, sparkles or confetti; and food coloring to color liquid
Take a jar or bottle of any size and pour a small amount of vegetable oil in it and then pour a small amount of water into the same bottle. Add a few drops of food coloring if you want to color the liquid. Then add sparkles, confetti and glitter if desired and close the lid. You have made a lava lamp. Have the kids shake the jar and tilt it up and down to see that water and oil don't mix together.