You can easily earn money by completing small surveys. These surveys will hardly take 5 minutes to 30 minutes depending on the details provided by the company.
All you need is to give your feedback and opinion, in a survey. You just have to choose your suitable option for the questions, without writing anything new.
You can easily earn from $1 to $20 depending on each survey’s length, your profile and the country you are living.
Following are few sites which help you in this regard
1. Global Test Market