Rune Thread

If you want to make money doing barely anything then this method is for you. It can over make 40g a day and only takes about 5 minutes. The downside is that it only works well on some realms and requieres you to have about 10g to start you off.

The trick is to buy Rune Thread for 50 silver off any Trade Supplies vendor, they are in unlimited supply. They can then be sold at Auction House for 1.5g each and sometimes up to 8g or so! You'd think that people don't buy them but often people do (at least on my realm).

I presume it's mostly non-tailors who are getting the mats for an item (its used to make over 200 different items) and just buy everything at the auction house, for this reason I usually put them in stacks of 5 or 10 since people don't usually need more.

Also make sure that you're selling them cheaper than everyone else and don't put in more than 20 a day, because they can sell off any vendor Trade Supplies vendor the demand isn't very high so its unlikely that more than that will sell (remember that high supply and low demand makes the price drop).