Dye Tubs:

There are rare dye tubs with rare colors hidden throughout Purgatory.

Eating:

Eating and being full increases your chance of successfully smelting ore.

Forensic Evaluation:

A successful use of this skill on a corpse will yield more hides when the corpse is carved.

Item Identification:

Using this skill on looted weapons and armor can reveal hidden attributes that increases the sell price of the item.

Powder of Fortifying:

Double click a bottle of this powder and target another to combine the number of uses.

Resources

Creatures and animal in Felucca map have twice feathers, wool and leather than in other maps.

Terragons

There is an Exposition of available items from Terragons in Vesper's museum in Trammel.

Toolbar

Command [toolbar brings up a tool bar that you can customize and add your favorite command for a single click command.

Torditsaron:

Feeding this Evo so it's Loyalty is high increases the amount of KP gained for each monster battled.

Various items

To easily transfer large amounts of stackable items, you can use so called "Commodity Deeds".