Android users can respond to a survey from Google and receive up to $1 in Play credits, but the credits vary, depending on the survey. Download the app, answer a few questions about yourself and wait to receive your first questionnaire. Expect to receive an average of one survey per week, covering topics such as "Which logo is best?" and "When do you plan on traveling next?"
Fiverr is a popular platform for offering services. You can create your own Gigs to have available for sale. As the name suggests, Gigs are available to purchase starting at $5 though you can offer upsells to increase your earnings. You do need to wait 14 days between completing a Gig to being able to withdraw your earnings by PayPal. There are fees associated with these transactions.