Ocean themed Foamies or plastic sea creatures (optional)
Glue gun with glue
Directions: Fill bottle 2/3 full of water and add 5 drops of blue food coloring. If using sand, glitter, shells, or foamies add to water. Cover bottle with lid and gently shake up. Remove lid and add oil almost to the top of the bottle. Apply glue to the inside of the lid and screw onto the bottle tightly. Turn bottle on its side and gently rock and forth to create ocean waves.