21. Say no to ATM receipts and save trees.

22. Set your PC’s energy settings to hibernate when you’re not using it. Here are instructions on how to make best use of your PC’s built in power saving features.

23. Join your local library and read to your heart’s content without having to buy new books. Think of all the trees you’ll save.

24. Reuse packaging materials like padded envelopes, bubble wrap and packing peanuts to keep them out of landfill and to save you buying them new.

25. Choose the electric hand dryer over paper towels to save energy. Seriously, it takes less energy to dry your hands with the electric dryer that it takes to produce the paper towel, and there’s less mess left to dispose of afterwards.

26. Turn your cars engine off when stuck in traffic. It uses less fuel to start the car than to idle for more than 30 seconds.

27. Instead of sending out paper invitations to your party, make your life a whole lot easier and save resources by using a free online service like pingg or mypunchbowl.

28. Volunteer. Get involved with the BTCV or other volunteering organisation to make new friends, get some exercise and do some good.

29. Save loads of money and energy by breastfeeding (or encouraging your partner to breastfeed) your babies.

30. Compost your fruit and vegetable peelings to make free compost for your garden.