Need some instant but disposable glue or paint pots for teaching a class, but YOU have to pay for the excessories? Fold up some sections of foil 3 or 4 times. Make sure the foil edges AFTER folding are about 2 inches wider than a jar or tub. Now simply wrap the foil up & around the container your using as a master form. Pack the edges together as tight as you can. Slide off the form your using to make the foil pots then roll over & press down the top leading edges to keep it all held together & make the edges nice & neat.