It might help if you would tell us your level and how much you want to spend.
Some good choices for the mid range shaman are
Rust Encrusted Wristguard
Chains of the Accused
Bracelet of the Spiritcharmer
All three are reasonably priced in the bazaar most days.
A couple of others you might want to look into
Coldain Military Wristguard
A quested item but very handy for the mid to high level shaman
Jaundiced Bone Bracer
Very pricey but incredibly powerful for the 45-60 shaman and useful all the way to 65.