If you shop online, this is an easy way to make money.
Sign up to cashback sites like Quidco, TopCashback and My Money Pocket then get a percentage back of whatever you spend.
Quidco says members earn £280 on average every year, so it's a nice little earner provided you only use it to buy things you really need.
Another way you can get cashback (and use this to pay off your mobile bill) is by using Airtime Rewards.
The way it works is you download the app, link your payment cards to it, and you can then earn up to 10% when shopping through partners including Argos, Boots and Primark.
You then redeem money off your pay monthly or Pay As You Go mobile phone bill.
Dig out your shopping receipts as you can make money snapping and uploading them to the likes of Receipt Hog, SnapMyEats and Shoppix.
Download the app and take a snap of the receipt.
The more you’ve spent, the more points you earn, which can be converted to cash via PayPal or gift vouchers.
You should check receipts for free prize draws too.
Stores including both M&S and Hollister offer discounts or a prize draw entry when you complete short feedback surveys.
As the name suggests, Free Lottery costs nothing to enter and gives you the chance of winning up to £10,000!
There are two different draws you can enter: the Daily Draw, which takes place every evening at 7.30pm, and a Weekly Draw which runs every Monday at 2pm.
The reason why it's free is that it's ad-funded, so you'll have to put up with a little advertising.
Want more chances to win? There are many alternatives available online, so take a look at our guide to the best free lotteries.
Spread the word about your great value mobile phone deal, TV package or breakdown service, and you may be able to rake in some extra cash.
Lots of massive companies including Sky, companies run ‘Refer a Friend’ incentives, with rewards for you, as well as the person you refer.
Of course, you should make sure it is a good deal first and that your friend is happy to sign up.
Check the company website for details as you may need to log in and send someone a special code to activate the deal.
Among the referral deals available now, both you and a friend can get up to £125 in vouchers to spend at major stores like Tesco and Currys when they sign up for a Sky Media package.
Also, the RAC will give both yourself and your friend £25 in M&S vouchers while AA will give you both £20 Amazon or M&S vouchers.
Got strong opinions? Get paid to share your views on everything from fast food to radio stations and magazines to computer games.
There are several sites you can sign up to, such as Swagbucks and Panelbase, which either allow you to transfer earnings to your bank account or trade for vouchers and gift cards.
How much you earn depends on the site and what’s involved.
With Swagbucks, you earn ‘Swagbucks Points’ (SBs), which can then be converted to cash paid through PayPal or traded for gift cards from Amazon or Marks & Spencer (M&S). To give you an idea of their value, 700 SB points equates to roughly £5.
The money-making site says you can expect to earn between 40 and 200 SBs per survey, but it really can vary massively.
Similarly, with Panelbase, you can earn anywhere between 25p and £10 for every survey.
If you’re stuck at home, there’s no excuse to put off clearing out the loft, shed or garage.
You can list and sell unwanted stuff on eBay, or if you’ve got lots of CDs, DVDs, books or games, a quicker way is to pop in the item barcode at MusicMagpie for an instant quote.
MusicMagpie also offer a free courier collection service, which saves trips to the Post Office.
Sign up to sites like Swagbucks to get paid just to watch short videos.
These videos cover many topics including food, fashion and sport and there’s a fixed number to watch for each topic. Each video is between 30 seconds and one minute long.
Obviously, videos can eat up a lot of data, so make sure you aren't roaming on your phone or device before you start!
You can sell old gadgets including laptops, computers and tablets without leaving your home.
Sites like Music Magpie will give you a price upfront and send a courier to collect your stuff.
If you regularly post snaps on Instagram and get lots of likes, why not go a step further and sell your photos?
Selling your snaps can bring in some cash and it’s not only shots of travel locations, wildlife, transport or sport that photo agencies want.
‘Real life’ shots of families at home or doing everyday chores, such as hanging washing on a line may not sound exciting but are needed.
Photos can sell from £5 up to £150 with agencies such as Alamy, but you’d usually get between 40% to 50% of this.
If your photos are on your iPhone, the easiest way is to load them up with the Stockimo app.
This one may not bring in cold hard cash, but you can always flog prizes if you don’t want them (as long as this is allowed by the company who gave you the prize).
There are tons of prizes up for grabs, including laptops, hair straighteners, a £100 Joules gift voucher and a bottle of peach gin at online competition site Loquax.
It’s free to register and browse the competitions – you simply click on the links to enter.
Also, it might be worth signing up to a freebie site like Latest Free Stuff for a chance to win prizes.
Who hasn’t got a few old phones stashed away in cupboards or drawers?
There are heaps of sites that you can sell your phone to, including Mazuma and WeBuyAnyPhone.com and even cracked or damaged ones can earn you some dosh too.
Most sites are easy enough to use. Just pop in the make, model and condition of your phone for an instant price.
Some sites such as Compare My Mobile will compare prices for you across lots of sites, plus you can post your phone in the postage pack provided.
Surf the net and make some cash using a browser add-on.
With Qmee, you do all your online searches as usual through Google, Yahoo or Bing, but you’ll also see a few extra ‘sponsored’ adverts with cash rewards. Click on the ads to earn around 7p to 15p every time.
With this site, there’s no minimum payout before you can transfer the cash, so any money earned can be switched to your PayPal account straight away.
You may not earn millions overnight but if your YouTube channel has enough subscribers, you can earn a cut of the cash it makes from adverts.
Anyone can start their own YouTube channel and load up their videos.
But you’ll need around 1,000 subscribers and 4,000 ‘watch’ hours a year before you can start making money through YouTube's ‘Partner Programme’.
Meet these requirements? Then click the ‘monetisation’ tab in your account to check if you’re eligible.
There’s a whopping £850 million stashed away in forgotten savings, according to the Money Advice Service.
Check if you’re due a windfall using the free search tool at mylostaccount, which covers lost bank and building society accounts along with National Savings & Investments (NS&I) products.
You only need to set up an account and fill in one form, regardless of how many accounts you want to trace.
Send it off and sit back and wait – you’ll be contacted by providers if they find money with your name on it. As this service is totally free, you won’t lose a cut of any money found.
*This article contains affiliate links, which means we may receive a commission on any sales of products or services we write about. This article was written completely independently.