FreeBitco.in is a Bitcoin faucet; it dispenses Bitcoins every hour, for free. At the moment it's 0.00000049 BTC per roll. The link is here. Disclosure: yes I receive a small commission on any future games played when you sign up with my link.
The site works by displaying ads, but you can block those and in fact leave the page, and come back in an hour. There are also gambling games which I will not risk anything substantial on. If you invest a bit, you can avoid the CAPTCHAs. It's kinda fun and it's free, so ... why not? And who knows if the value of your earnings ever goes up to something substantial on the currency markets in future, maybe it'll come to something. So far I've earned about £0.07 from this over the last few days (42 rolls), and it's quick and easy. Think of it as a way to get Bitcoin transaction fees for free. It is not going to make you rich in any way--at least, not at the moment. If you want to "get rich quick" then simply buy and hold BitCoin, but be aware that the value of a single BTC is already multiple thousands of pounds/dollars. This is zero risk in contrast. Give it a shot if you have the time for a fun hobby.