Forged Documents - Currently these are limited in their profitability by a one day cooldown. They still provide a little bit of profit in their current state but not really enough for us serious gold makers.
Mysterious Fortune Cards - The cards sell great (along
with Fortune Cookies) as long as you are barking them in order to keep interest
up. They are basically a form of
Blizzard sanctioned in game gambling as when you turn over the card they can be
sold to a vendor for anywhere from 10 silver to 5,000 gold. There is a good segment of the Powerword:Gold podcast talking
about this matter.
Dust of Disappearance - These can usually be made for
under the cost to buy them from a vendor. At one blackfallow ink they are cheap to make
and you can often sell quite a few in a day. Just be sure to list them on the AH for a
price lower than the buy price from a vendor in order to sell a good number of
them. But again, this is a low income source.
for this and other ideas on the glyph market please follow the link to the free Croda's Inscription Gold Guide