Vinegar is fantastic as an alternative to dishwasher rinse aid, perfect for streak free windows and if you add a spoon or two to your washing machine it'll kill any bacteria in the clothes (the ones that leave sweat marks).
Bicarbonate of Soda removes tea stains - just soak the cups in bicarb and warm water. It is also the best oven cleaner I have ever come across, just mix with warm water to make a paste and rub all over oven, leave for ten minutes and rub off.
If you have a blocked drain in your sink then my number one tip - pour some bicarbonate of soda down the drain using a funnel and then pour down a cup of vinegar. It will fizz up and unblock your drain.
