Just while searching trough the AH I saw this item pop up:
The Gordok Ogre Suit - Quest - World of Warcraft
It's a quest in Dire Maul, and after you've done it you get the recipe to make the Suit/costume.
The player sold 'em for 40g each, and after a few minutes 8 out of the 14 auctions was sold.
The mats is as following:
Bolt of Runecloth - Item - World of Warcraft x4
*Easy to make if you're a Tailor. If you're not, check the AH or gather 4 x 5 Runecloth for 4 bolts.*
Rugged Leather - Item - World of Warcraft x8
*If you're LW those can easily be gathered yourself. If not, check the AH.*
Rune Thread - Item - World of Warcraft x2
*Bought from Vendors.*
Ogre Tannin - Item - World of Warcraft x1.
*Look in comments on where to find.*
You can even sell them for more than 40g - I'm sure that a lot of peoples will buy one of those, use it and then buy one more.
I haven't tried this myself, but it seems to be viable if you're willing to gather the mats. Alts with Leatherworking/Tailoring is of course a help.
Ask any questions if you feel it's needed.
-Aurina