An increasingly popular way for students to make money is to fill out online surveys in their spare time. Research companies are always recruiting new members to answer surveys and test new products.
For a few minutes of form filling, you can make a couple of quid which is paid as cash or rewards. You can bag up to £3 ($5) for some surveys!
A few good ones to try are: Toluna, OnePoll, MySurvey, i-Say, Global Test Market, The Opinion Panel, YouGov, Panel Opinion, Pinecone, Valued Opinions, SurveyBods, PanelBase, Branded Surveys, Hiving, Opinion Outpost, Prolific