Getting equity out of a credit card

[Sharon Rolel]

I have 3 credit cards, student cards which have annual rates of around 6%. Combined, the credit I can use is around 20k$ a month. They are international (though not American) cards. I use maybe 2k of that, and I never use credit to pay for anything, just charge the card and pay it off automatically each month.

Can anyone think of a way to utilize these (what I think are) outrageous terms?

Just to make it clear, this isn't a loan (I have taken everything I can at even better terms), just the amount of credit I can use monthly with the cards.