For frequently used items, buy in bulk. Otherwise, buy just the amount you need. Larger sizes reduce the amount of packaging, but smaller sizes reduce leftover waste. Reduce toxic waste by purchasing paints, pesticides and other hazardous materials only in the quantities needed, or by sharing leftovers. Buy concentrated products to reduce packaging.
Examples are concentrated fruit juice and laundry detergent.
Carry a canvas or other reusable tote bag when you shop. It eliminates the need to use the store's disposable paper or plastic bags. At School Use both sides of a sheet of paper before recycling it. Use scrap paper for art projects. Reuse paper bags, wrapping paper, or newsprint for book covers.