Try this fun STEM activity with your kids. To make these diy lava lamps for kids you need a clear container. Pour oil (olive or vegetable) inside (about 1/4 of the cup). Fill up water the rest of the way, leaving an inch left in the cup. Drop a few drops of food coloring into the cup and then give your child an Alka-Seltzer. Drop it in and watch the magic! Save this to try and follow our page for more ideas! #stemactivities #kidsactivities #kidsscience | Stay at Home Activity Mom