Free Cash Sign Up Referral Bonuses

The Chime referral program provides new members $50 as a sign-up bonus when you join using a current member’s referral, plus current members will earn a $50 referral bonus for each new member that you refer.
Nvstris a modern investing platform designed by ex-hedge fund guys to make smart investing simple. Right now they're giving people up to $1,000 free cash to invest when you join (selected at random, but you're guaranteed at least $10).