Sewer-Pipe Jelly

Being an alchemist, you can get an experimental potion daily (or at least very frequently) from the underbelly which gives you a random buff while in the underbelly area, most useful being the tuskarr one, which allows you to fish for sightless eyes in open water (in the underbelly). The quest also rewards 150 eyes when accepted. More info in here:

http://www.wowhead.com/achievement=11066/underbelly-tycoon#comments

If you're like me and really dislike PvP here's some pointers: You can get Sightless Eye by pet battling in the Underbelly, or by fishing at the BMAH. When guards are on duty rare mobs will be popping up all over who drop the currency too.

Talk to Raethan, who stands in a sanctuary zone right after you walk down to the sewers next to Krasus Landing, and hire a bodyguard for 5 gold, lasting for 5 minutes, when guards are off duty and you can run around without getting PvP flagged.