I went to the dollar store (Family Dollar) and bought a clear plastic deviled egg tray which also comes with a lid. I took some white spray paint and sprayed the back of the tray so I could see the color better. I mix all my colors up for the painting. If you have to leave, spray the colors with water, put the lid on, and put in the refrigerator. When you return paints are just like you left them! Have fun painting!!