Affiliate links and referrals to other crypto sites would probably earn a decent amount so long as people are clicking on them.
This is right, Affiliate links are a great option to monetize the site, they could be casinos links or exchange links. And if you design some nice banners that will be the right way to get those clicks.
it is questionable how effective it is to promote a casino on a faucet page. Even nice banner design, faucet visitors come there just to claim and move on, probably they visit a lot of the same faucet in the row.
He needs some pay per impression program.