Paid Surveys: For a few minutes of form filling, you can quickly make a couple of quid which is paid as cash or rewards
Stock Trading: Trading is often viewed as a high barrier-to-entry profession, but as long as you have both ambition and patience, you can trade for a living
“Get Paid to” sites: GPT sites reward you in cash and vouchers for completing various offers or activities online.
Clickworker: There are a variety of tasks, but most commonly they involve mindless data entry, web research or form filling
Cashback for Shopping: There are a number of cashback sites which pay you the commission they otherwise would have earned
Sell course notes: There are several sites where you can upload your notes. When another student downloads them you get paid
Buy and Sell Domain Names: The trick is to find available domain names which have some commercial value. Snap them up and then list them for sale on a site
Sell your photos: If you are looking to make a quick buck, sell the pictures that you have taken
Rent out your house: If you have a spare home or rooms then the best way to make money is to put them on rent