You don't already have a second job?

Sell pot.

throwing out some random crazy ideas.

you could try busking if you have any talents.

If there are any shellfish species that produce nacre where you live you could sell the nacre/process the nacre into trinkets such as necklaces and sell them to tourists/sell the edible part.   (providing that it is legal for you to harvest them). (nacre is used to make: jewelry as well as inlays in furniture and musical instruments). It is the same substance that pearls are made of. the difference being that instead of being a ball it coats the inside of the shell.

whore yourself out to a desperate fat/ugly/old woman.

not sure if it helps but this import is cheaper, I think they are the same, right??

http://www.play-asia.com/paOS-13-71-bp-77-1-49-en-15-demon%27s+sould-70-3h0s.html

they take Paypal, so just sell whatever you got on ebay until you have enough money then buy it.

^^^

Busking??

Too much competition for the second idea

I'm not sure where or how to start whoring...

sell some blood

or

Babysit/dogwalk

put up flyers saying you'll rake/mow/wash cars

I would end up paying more... Also the cost of shipping and sending here is rediculous. Sending my stuff to the buyer would yield little [if any] profit...

Oh... I'd like to add that I also owe my brother about 70 bucks... 

http://en.wikipedia.org/wiki/Busking

Insurance Fraud, or Blackmail someone.

if you own textbooks that you don't use anymore you can sell them online.

buy a bunch of candybars and sell them on the street for twice the price. Tell them it's for you school fundraiser.

buy games from one store and sell them to a different franchise. Gamestop will take returns without a receipt for store credit, so if you can buy a sealed game at one store for 50 and sell it to a place like gamestop for 60 etc...