Online Surveys are a great way to make a bit of extra cash on the side. The companies pay you for your opinion about various topics. Each company uses a different method to pay out. Some pay with gift cards, PayPal, bank transfer or a cheque. It is not a quick get rich scheme by any means, it does take time but at the end of the day, you will have a few extra Euro in your wallet.
Here are the sites I am signed up with.