In Canada here, where we have much less options than in the USA.
Banking:
ATB bank: I opened a bank account ($350) and referred my wife ($150), who opened hers and got $350. Had to keep the accounts open for 3 months, at $5/month for fees, total fees $30. Net gain: $830. Accounts closed
Tangerine Bank: got $150 in referrals. Also got $150 for opening a no-fee checking account. Wife got $150 too.
No-fee Credit cards:
Capital One: $75 Amazon credit signup bonus (through ratessupermarket.ca)
ScotiaBank Scene: $50 Amazon credit signup bonus (through ratessupermarket.ca)
ScotiaBank Visa: $75 Amazon credit signup bonus (through ratessupermarket.ca)
President's Choice: 50,000 pts, equivalent to $50, also came with a $75 Amazon credit signup bonus (through ratessupermarket.ca)
Fee credit cards (no fee for year 1)
RBC Avion: 30,000 pts (equals $300 in air tickets), also came with $150 Amazon credit
RBC Avion Business: 30,000 pts (equals $300 in air tickets).
Amex Aeroplan Gold: 25,000 Aeroplan pts, also came with $150 Amazon credit
Amex ScotiaBank: 30,000 Scotia pts (equals $300 in air tickets), also came with a $150 Amazon credit
I got a few other cards I can't remember, that came with Amazon credits between $20 and $50, I keep them in the safe place at home after getting the signup and/or threshold spending bonuses. I keep the no-fee cards but cancel the cards with an annual fee before year-end.
I am having problems getting the Amazon Visa credit card with no forex fees. I've been rejected 3 times now, not sure what is going on...