1 Watch videos, play games and earn

 Swagbucks* is a fun survey site that pays you for completing short online tasks in virtual cash - you can then exchange this for real money, Paypal credits or gift cards to spend at Amazon, M&S and more. The site's huge in America, and here in the UK many MSE forumites are dedicated users.
Tasks include filling in polls, watching videos and searching using its page instead of Google. Advertisers pay Swagbucks to publicise their wares or do market research, and the site passes a cut to you. The more dedicated you are, the more you earn, though every task pays a different amount.

2 Earn cash from homemade videos

We can't promise you'll earn £100,000 like the dad who uploaded “Charlie bit my finger – again!”, the clip of two cheeky brothers that racked up 825m views. Yet even if your YouTube videos don't become global phenomena, it's possible to earn a little extra each month through the clip-sharing site.
Before we get started, here's forumite sophie.christie's story for inspiration:

3 Online survey sites Earn up to £800/year to give your opinion

Willing to give views on Justin Bieber, washing-up liquid or whether we should quit the EU? If so, it's possible to earn £100s a year, without any special skill or talent.
It's all about stashing cash by filling in online surveys. All you have to do is sign up, wait for survey alerts to land in your inbox, then zip through the questions.

Polls are often fun. You get to vent about everything from video games to your sex life. For a full rundown of the top 20 free sites, plus tips to max your income, see theOnline Survey Sites guide.

Committed survey-doers can get £200ish a year, but if you max it like MoneySaver funnyguy:

4 Get paid by cllicking on an ads

Make money in the easiest way ever! Just click on the available advertisement and make up to $0,03! Advertisement will be opened in a new window. Just wait until counter shows 0 (it's only few seconds) and money is yours! http://wad.ojooo.com/ads.php

5 Earn hard cash for fun tasks

Online earning site Gift Hunter Club doles out points for watching videos, doing polls, entering competitions and completing other easy tasks.
You can convert these into cash through PayPal, Amazon vouchers and more. Just sign up and check the 'earn points' section. It shows the tasks available and what they pay.

6 Get paid to watch videos Maximiles

It's possible to earn high street vouchers just for watching videos though Maximiles. Clips are short adverts, for example, Andrex promos or Cheryl Cole videos.
New vids come up every day, so visit often, plus forumites post the latest ones in the Maximiles thread. One thing to watch out for: make sure you're logged in when you rate the videos, or you won't get points.

7 Get paid to watch videos, search & more Gift Hulk

Similar to Swagbucks above, Gift Hulk pays for a host of web activities, including watching videos, answering polls and searching via its site instead of Google.
Many MoneySavers are fans. You get paid in Hulk Coins, which you then convert into rewards including Amazon vouchers (make sure you select vouchers in GBP, rather than US dollars).