You get $30 when you sign up and stay a member for 35 days. That will involve you paying a monthly fee of $5.99. You will also be able to get up to $600 from your own referrals.

You get $15 of your first order on Imperfect Foods aka Imperfect Produce aka Misfits Market. Maybe there is an order minimum, I don't see one.

Click the link for $10 off first order. New signups only.

You get a 1% match on the amount you invest in the first year (in IBKR stock, but you can sell it). I think you probably need to hold the funds in the account for a certain amount of time and there's probably a max, but I can't find it. Terms and conditions are in the linked page. You have to be a new customer to get the match.