Make Your Own Salt Volcano Lava Jar at Home Looking for a bubbling science activity that kids will love? These DIY salt volcano lava jars are mesmerizing, simple, and full of flowing, fizzy motion. With just a few household ingredients, you can create glowing lava currents that rise and fall like a tiny volcano in a jar. Ingredients (makes one lava jar): Clear glass jar or cup Water to fill the bottom layer Vegetable oil to create the floating lava zone Salt to trigger the eruption Food coloring

The Floor is Lava: How to make Lava DIY