We like free ways to help the environment and this is a great one. If you have a toilet at home or work that has just the one flush setting then you need a Save – a – flush. This nifty bag expands when it’s put into the cistern and diplaces 1 litre of water everytime you flush. Incredibly that adds up to 35, 000 cups of tea a year!

Water companies generally give these away for free, eg Severn Trent Water, United Utilities. To find your supplier then click here and grab your freebie.