Saving on paint
Have you ever been painting and you have had to go out leaving your paints in your mixing pans. You come back and they have gone dry, waste of paint. Go to your local photo developers and ask for some of the empty film canisters they have lying around. I use them and make loads of different coloured washes in them, once you have put the lid back on they are airtight and you just keep making up your washes. Your paints will last a lot longer no more waste and it will help you to save money.