Lava lamps are a trendy decoration for any room, and they can be made at home with a few simple materials. All you need is a clear glass container, a heat-safe container for the lava, vegetable oil, water, food coloring, and a small lightbulb.
Start by filling the clear glass container with water. Add a few drops of food coloring to the water and stir. Pour the colored water into the heat-safe container, leaving a bit of room at the top.
Fill the remainder of the heat-safe container with vegetable oil. The oil and water will not mix, so the lava will sit on top of the water.
Place the heat-safe container inside the clear glass container. Screw a small lightbulb into the lid of the clear container. When you turn on the light, the heat will cause the lava to rise and fall in the container, just like a real lava lamp!