I'd try opening some CCs and getting the 25k bonus, redeeming miles on LSC games (check the thread in SPAM), doing a few opinion place survey. There is also a new thing at Citibank (if you want to open an account with them) which allows you to fund a deposit account with a CC as a standard purchase and receive the miles. Depending on your credit and banking needs, you could easily open on checking account with Citi, fund it and then write yourself a check and close the account in 60 days.

I'd recommend getting a CC. Even if you have, say the Citi Mastercard AAdvantage, you can open and get the welcome bonus for both the Business MC and the AMEX.