What I know about other gambling platforms such as stakes.com is that they give cashback every day, depending on how many wagers you have used on their platform or others have a rain called where you will receive free or bonus rewards depending on the cryptocurrency they give.
But others provide like giveaways or faucets, it depends on how you grow it on their gambling platform.
It is common for casinos to give cashback to their users, especially those who often deposit their money to gamble.
Casinos also understand how they can attract more users, giving out certain rewards at many events.
And it's not just in events. Sometimes they also give random things to loyal users that will keep users coming back more often.
But for faucets, there may not be many casinos that provide them because nowadays, the price of crypto has gone higher than it was a few years ago so casinos are replacing it with other prizes.