22. Sell Plasma

Everyone knows they can donate blood, but did you also know you can donate your plasma – a liquid filtered from your blood that’s used to treat rare diseases – and get paid handsomely for it?

You can actually earn between $20 and $50 per donation by selling your plasma. All you need to do is head to a consumer plasma donation center, where they’ll draw your blood, filter it for plasma, then return it to your body within about an hour.