Stake.com –
Reload bonus – Reloads are free money given every 10 minutes usually , which can be claimed and withdrawn up on reaching minimum withdrawal. They offer pre monthly and post monthly reload bonuses to all the players who have wagered at least a little amount. Bonus amount depends on recent wager.
Monthly bonus – Usually monthly bonus offered by Stake is a one time coupon if you are a vip player , other its a reload just like pre monthly and post monthly.
Weekly bonus – This is meant only for VIP players (Bronze ,Silver , Gold , Platinum 1-6 , Diamond).
Christmas 2 week long 10 minutes reloads – This was one of the best reloads to claim where I was able to claim around $160 in 2 weeks.
VIP level welcome bonus – This bonus is given to those who reach new level of vip. For bronze , it is $25 , Silver – $50 , Gold – $100 and so on).
Chat rains are often in Stake , those who wager at least $3k in a week are eligible to receive big rains from players and moderators.
Duckdice.io –
Duck hunt bonus – 1-4 Ducks randomly fly at random direction in chat every 3 hours or so in random time , each duck shot (you have tap on duck which flies in chat screen) gives $0.07. Anyone can claim this bonus. Thing to remember – One cannot withdraw the funds made from duck hunt bonus every 3 hours , without wagering and depositing real money. There are plenty of wagering tricks available in internet related to dice gambling.
Lucky bet bonus – Every hour or so , you get a chance to win $5 by placing bet that time with some requirements such as minimum bet amount.
Deposit bonus – Duckdice offers deposit bonuses very often with increased house edge.
Chat rains – Anyone who has at least 1 level (or 1 duck feet) is eligible to get rains on chatting without spamming.
Faucets – Players can try their luck with faucets (free money) and try to reach minimum withdrawal without any risk.
Luckyfish –
Chat rains – There are lot of good rains made by players .
Email bonuses – Luckyfish offers more email bonuses often.
Luckyfish has also got free faucets like Duckdice.
These are all the casinos I am aware of ,what are the casinos you play in and what bonuses you try?