So I recently found the website earn.com/mwelboren/referral/?a=doqvk7y78x61x05b. On this website you get emails for airdrops and some short survey's. When you complete the survey you get a certain amount of Bitcoin. This depends on how much you set as a payment to reach out to you.
For me it worked really well and I have earned some bitcoin with this. It is free to register and easy to use.
Register through the link earn.com/mwelboren/referral/?a=doqvk7y78x61x05b and let me know what you think.