It doesn't hurt to frequent a thrift store now and then. Why? Because look what I found today! I purchased some low volume glass petri dishes perfect for mixing oxides and stains to decorate pottery. Mix up an oxide of your choise, then add frit and water. Dip your brush in and paint your pottery designs on bisque or greenware.
I purchased four glass petri dishes for 50 cents each. These are perfect for mixing oxides, frit and water for colorants on greenware or bisque. After you mix up a batch, if you don't use all of the mix, just let them dry out. Label them with a piece of tape. Later spritz them with a bit of water to use them again. Many colorants like cobalt are very expensive so you don't want to waste even the smallest amount. This method helps save every last bit of expensive colorants. Thanks for reading and for all your comments.