Make your purchases with rewards credit cards, and save those rewards (or spend some) in High Yield Savings accounts to keep the rewards going. ALWAYS PAY YOUR BALANCE ON TIME EVERY MONTH.
Aside from these referrals I take advantage of these membership rewards cards:
Amazon Prime Chase Rewards Visa (5% back at Amazon & Whole Foods)
Costco Citibank Rewards Visa (4% back on gas & 2% back at Costco)
Nobody wants to get in line at the bank anyway.
Give it a chance, but be careful!