Oooh, if youre 50 fishing you can send out your retainer for a fat cat minon if you get them to 50 too! Adorable, rare and pricy. If youre interested in desynth, the level 50 pvp belts can be armorer desynthed for darksteel nuggets and ingots.

Sorry to say, itll be hard to get much gil without getting to a higher level, other than through dumb luck.