@Surreal's spoilers,
@VennD
there are gloves that grant Throwing and Returning but they're 10k.
I suggest going with normal thrown weapons. Just throw a fuckton of them.
Rapid Shot, Whirling Frenzy, Haste, Palm Throw and the ability to hit two with one throw (Halfling Skiprocks, the Talenta Boomerang feats)
2d6 SA
Craven
Shiba Protector 1 might be out of range but it'll add Wis to Attack && Damage (might only work on melee... check OA)
Shadow Blade for Dex to damage (if you use Aptitude daggers emulating the boomerang feats)
Hit and Run Fighter from Underdark adds Dex to damage against Flatfooted opponents
againTargeeter Fighter from Dragon Magizine adds Dex to damage
againDead Eye from Dragon Compendium will add Dex to damage
again