Get some money back when you shop online by clicking through to retailers on cashback websites. Unfortunately, the small catch is that you can only request payouts once you have a certain amount in your account, which means you need to spend enough to get it. There is also a problem in that each website doesn't support all retailers, so you sometimes have to "shop around" the cashback sites for the best deal - of course meaning you earn a bit less in each, meaning more time until you get money.
However, it's a worthwhile thing to do if you shop online regularly. Here are the ones I use most regularly.
(TIP: always use the same email address on the cashback sites as you do on the retailer sites, otherwise it won't match you up to receive the cashback)
MUTUAL POINTSWhat you do: This is my favourite one. Shop online and get cashback, usually ranging from 1-5%, they support pretty much every retailer you can think of. You can also sign up to receive up to 3 emails per day - typically, you get 5 points every time you click a link in the emails, or you can earn extra points by registering on websites, downloading software, etc. Not only that, but they also now support a small selection of high street shops like Superdrug, so it's not all online shopping!
What you get: 3000 points gives you £20. You also get 50 points when you sign up
Minimum payout: 3000 points (£20)
Website: MutualPoints.com
MY SHOPPING REWARDSWhat you do: Shop online and get cashback. It has a few free offers for cash as well.
What you get: £3.50 when you sign up, and money when you buy online or sign up with affiliates, enter competitions etc.
Minimum payout: £20
Website: MyShoppingRewards.com
PIGSBACKWhat you do: Shop online, complete offers, enter competitions and all sorts.
What you get: 100 PiggyPoints on registration, cashback on all sorts of things. I've never actually used it, although I am a member and it seems quite popular. However, even if you don't want to use it, do sign up because your registration bonus of 100 PiggyPoints can be redeemed for a £1 donation to charity.
Minimum payout: 100 PiggyPoints, there are a whole load of rewards available.
Website: PigsBack.com
Some other websites that offer good deals (but that I haven't really tried) are TrolleyCash, TopCashBack, Quidco, FreeFivers and MoneyBackMadness.