If everyone is sharing their favorite casino's, I will also add mine.
I played already for years now on BitcoinPenguin. They got some nice promo's with free spins + cashback. See https://www.bitcoinpenguin.com/refer/TwitterFreeSpins
Free Spins Friday
Deposit as low as 0.003 BTC, 0.1 ETH, 0.1 BCH, 0.3 LTC, and 5,300 DOG on any Friday and get refreshing 25 freespins for our best slot games including Platinum Lightning Deluxe, Aztec Magic Deluxe, and Slotomon Go!
Monday Free Spins
Deposit over 0.003 BTC, 0.1 ETH, 0.1 BCH, 0.3 LTC, and 5,300 DOG on a Monday, and you are eligible to receive 50% match bonus up to 0.2 BTC, 6.5 ETH, 6.15 BCH, 22 LTC, and 370,000 DOG, as well as 25 free spins!
MONDAY CASHBACK GUARANTEE
In case your luck seems to have run out and you have a negative revenue on any Monday, we now guarantee a 20% cashback bonus on your biggest deposit on the same day. Please contact our live support to claim yours!
SECOND DEPOSIT BONUS
Deposit as low as 0.003 BTC, 0.1 ETH, 0.1 BCH, 0.3 LTC, and 5,300 DOG, and receive instant 75% match bonus up to 0.2 BTC, 6.5 ETH, 6.15 BCH, 22 LTC, and 370,000 DOG! Apart from that, you'll get 25 freespins for the highest-paying BGaming slot games.