As Poloniex recently upgraded their XRP wallet a few days ago (it no longer required staking 20 ripple) I thought to give this a try. Basically
you can earn 2 drops by solving a capcha and every 30 drops it automatically pays out to your address provided. I wasn't sure polo can handle this small amount but apparently yes.
So basically after every 15 capchas types you'll receive the amount. You can also use Coinbase as you wallet address if you have an account there or basically any wallet that provides you with an address and a destination tag.
a very easy capcha