From the French Tole Pente du Lac, tole painting refers to applying paint and lacquer to tin, it began as a way to prevent common household objects from rusting. Tole refers to decorated tin and iron wares from 1700-1900; but most people also use the term to refer to various painted metalware from the late 19th to mid 20th Century.
Turning eyeshadow kits into watercolor kits. Just did this with a couple of old compacts I wasn't using. Excited! *Update* I have found that the super inexpensive watercolors crack and break causing a lot of messiness. Do with that info what you will.