I'd heard of online surveys but never joined any sites as I thought they were all scams. Through a lot of research, I found a few in newspapers that I 100% believe to be genuine. They don't ask for any money, and they don't promise a 'get rich quick' policy. You get paid 10p-£3.00 per survey (depends on site) and the surveys only take a few minutes max. Two sites you can join:
http://www.onepoll.com - Lots of surverys, adds up relatively quickly and you get paid when you reach £40
http://www.valuedopinions.co.uk - You get paid in vouchers for any shop from their list (includes Tesco, Boots and Topshop)
http://uk.toluna.com/ - I recently joined this and I've earned quite a few points already (points = vouchers)
Warning: Be careful what you sign up for. These are genuine and so are many others but some aren't. Never pay to join a site.
Sell your stuff
I'm sure many of you have held a blog sale or sold stuff on ebay, and as great as it is, it's a bit more difficult to sell bigger items or items that people don't want to pay postage for. What's the solution? Car boot sales. They are amazing, and a perfect way to clear out your junk and earn some cash too. You generally need to pay £10 to get in, but I've always earned at least £60, sometimes over £100 in a few hours. It really is worth it, and just remember, one mans junk is another mans treasure!
I have plenty of other ideas but I think I'll leave those for another day. What are your top tips for making a bit of extra money?