Joining Steemit.com is one of the easiest ways to get a few dollars worth of steem for free. Most people reading this should know this already. There is another website that offers free crypto to it's users for just signing up. There is also a video game that lets you earn a tiny amount of bitcoin.
Wildspark- The cryptocurrency AMP is used on the wildspark.me website. A video sharing, trending, and tipping platform. It is quite unique as it allows you to tip the creator of the video as well as the user that shared on the website. If other users find the video interesting then they can tip as well and the original user profits as well as the creator. This creates an interesting and organic trending section which is unlike any video platform out there. All that is needed to receive the 10 free AMPs is to sign up at https://wildspark.me/
Sarutobi- This fun video game can be downloaded as an app to any smartphone. There are coins the player must aquire and redeem for actual bitcoins. All coins are payed out at the end of every month. The amount is small but the game can be a fun way to pass time and earn some satoshis. https://play.google.com/store/apps/details?id=com.mandelduck.sarutobi&hl=en