Alzrius
The EN World kitten
It's not focused on magic items, and was for d20 Modern rather than 3.X, but I remember the "Scion of Masada" advanced class from Skortched Urf' Studios as being pretty awesome. They're basically super-elite MOSSAD agents, trained in mystical as well as martial combat. You'd only need a tiny amount of tweaking (e.g. changing the skill list) to use the class in 3.X.
Oddly, it doesn't seem to be sold on its own anymore, now only being offered as part of the Dept. 7 Full Monty bundle (please note that this is an affiliate link).
Oddly, it doesn't seem to be sold on its own anymore, now only being offered as part of the Dept. 7 Full Monty bundle (please note that this is an affiliate link).