really interesting faction - frost giants with HQ in Dun Niffelem (Storm Peaks) - this location will be available for you only after you reach Neutral
standing with them - until then, they are pretty hostile (and i would say, deadly). To get Neutral with them, start quest line from They Took Our Men! (starts in K3, so beware). You will need to complete this quest line, up to A Spark of Hope - it's important to know, that quest The Refiner's Fire will arise from drop (Slag Covered Metal
) done when killing Stormforged Iron Giants.
After gaining Neutral, you will gain access to flypoint in Dun Niffelem and to vendor - Sons of Hodir are the only source of shoulder enchants. All daily reputation Quests are in Dun Niffelem.
For rewards look at Sons of Hodir at WoWWiki. Lillehoff, Quartermaster, is at Dun Niffelem.
Reputation raising :