freebitcoin faucet has been going strong for years and doesn't appear like it will stop anytime soon. You can claim 3 sats (at current rate) from the faucet every hour and, if you're into it, you can even gamble away your sats! The bitcoin in your online wallet gains interest at a rate of 6% too, even if you deposit it (which I would be wary of but it's an option). There is a lottery and a token and more, but you can DYOR if you want to find out. Please sign up using my referral link and keep a tab open to stack your sats every hour :)