There are a few options through the financial services industry:
Each of your credit cards have a Cash Advance limit, which is separate than your purchase limit. Call your card companies and ask what that limit is on each card. Go in to your bank and request that exact amount to be advanced. They will run it on a machine, you sign, they give you the cash (or put it in your account so you can write a check for your student loan). It is a simple transaction they are familiar with. You will probably pay 5% of the amount advanced and charge you typically 24% APR - The fee is all that matters here, as you will only have the balance for a few days & won't accrue much interest.
There is also a limit for how much you can overdraw your checking account without the item being returned. Your bank is highly unlikely to tell you this, as it represents the maximum amount you could potentially fraud them for. However, they may, or may give you some indication if you tell them you need to rely on this for a small amount, and give them proof of your upcoming transfer. An OD will cost you $35 or so.
You can also get a payday loan, which is probably the most expensive option. You will get a check to deposit in your bank that day, and should have access to those funds soon, depending how large the check is (again, ask them, you can negotiate this). Call a couple places to see what they charge. They should be competitive with each other.
Other than that.. the things others have mentioned. Borrow money from friends, family, ask for a draw from your employer, sell something on craigslist. Those are probably the best ideas! Good luck!