If you have an Android device, you can earn Free Google Play Credits that can be redeemed for PayPal Cash by answering quick surveys with Google Opinion Rewards. Simply download the Google Opinion Rewards app then answer a few basic questions to get started. You'll receive a notification on your phone when a new survey is ready for you.

Google Opinion Rewards

Getting started is easy. Download the app and answer answer basic questions about yourself. About once a week you'll get a notification on your phone that a short and relevant survey is ready for you. Questions will range from, "Which logo is best?" and "Which promotion is most compelling?" to "When do you plan on traveling next?"