Yeah the BCNM name is Charming Trio, and the only good drop really is Mannequin hands. However they are 100% drop. So where you only get maybe 150k, its still only 20 orbs, its easy as shit, and youre guaranteed money. Do it acouple times, get a base of money, and then move on to more difficult BCNMs like Royal Jelly, Under Observation etc that have higher reward drops, but also lower % on drops.
But shit the way the economy is now 3-4 runs on Charming Trio would probably have you set on gear for at least to level 60, if not 70. Just remeber they are Rare so you have to do a run and sell em before you can do another. And they can take time to sell.
One other option you can do is quests. Couple of the Nin scrolls sell for some decent cash, and although you'll want Utsusemi: Ichi/Ni for Sam/Nin the others arent that big of a deal, and you can always buy em back later if you need to. Also if you dont plan on leveling WHM/BLM the Teleport scrolls and like Aspir/Drain sell pretty well. Although the easier ones are run to shit by Gil sellers and can get undercut pretty bad, they still can sell for some decent money.
