I discovered an awesome art supply in Dollarama yesterday. If you like to put watercolour paint into half or full pans I found sticky magnets to adhere to your pans. They are cut to fit perfectly on a half pan. These magnets were only $1.50 for 200 magnets. The magnets are of excellent quality. Another good supply is a ceramic tray for mixing paints or making a palette with tube paint. The shape of the tray is made so the paint will not leak over the sides but if flat in the middle. The tray is large enough for a palette for 12 or more paints. The trays are found in the dinnerware department.