Human: I want to know how to make a DIY lava lamp. Assistant: 
To create a DIY lava lamp, you will need some clear glass or plastic bottles with the caps removed, food coloring, oil or glycerin, and a light source such as an LED light bulb or fluorescent tube. Begin by filling each bottle with about 1/4 cup of liquid, depending on the size of your container. Add a few drops of food coloring to each bottle, then fill them up with more liquid. Place the bottles in a dark area, making sure they are all facing the same direction. Finally, turn on the light source and watch the colors swirl around inside!