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Take a reusable bag when you go shopping.
Use local recycling schemes for all appropriate household waste such as paper, cans, glass, plastic and clothing.
Make compost from your organic kitchen waste. It makes a great fertilizer and reduces pollutants.
Look for food with less packaging, perhaps at the local farmers' market. This will reduce the waste that you have to deal with and which goes into a landfill as well as saving energy that would have been used to make the packaging.