Sign up for Vindale & start earning on emails they send & taking surveys available. They are pre-screening you to also gain access to other survey companies who are accepting new applicants. Survey opportunities range between $5-$75. Cash out whenever you reach available minimums on your survey accounts so as to avoid your credits from diminishing unexpectedly.
TIP: As with all things... PLEASE exercise caution & good judgement. If being asked to send away for free trials of products know that they are never totally free. These free trials WILL cost you in the $70-$120/month range some with a 3 month minimum which IS always noted in fine print. Those types who do business that way will continue to send product and/or bill you automatically so pay attention to your monthly statements. Often the cancellation must be done referencing dates, product, amounts, payments & has to be in writing to an address they specify.