Go undercover to local stores, look around, take notes and sneaky pictures of stuff doing nothing, fill in the questionnaire afterwards and get your cash. You can get mystery shopping assignments via Mobee app (typically the payments are not that big, yet the tasks you need to do are simple too) or get an account with Marketforce – a more established website where you’ll need to carefully fill in an application form and pass a review process. The potential earning are much bigger.
One of the cool things about Google AdSense is that it's so easy to get set up. If you have a blog or website, you can sign up for a free Google AdSense Account. From there, Google will give you a unique code that you will paste onto your website. Google takes it from there, tracking your page views, traffic, and earnings on your behalf. There is no upkeep or maintenance to get this thing going, which makes it a no-brainer if you have a website already.