Hmm, I have an item ability that is pretty interesting, Talak's Runesword (katana, but you could replace it with a bastard sword in a more European setting than mine). It was the weapon of a fabled general long ago, and has since been in the hands of various adventurers and/or power groups. Talak's Runesword has a +5 enhancement bonus, and grants the wielder a +2 enhancement bonus to Intelligence and Charisma when it is held or sheathed on their person. Additionally, once per day as a standard action while wielded, the wielder can activate a spell-like ability that heals 3d6 damage per round to the wielder for 1 minute, but only if the wielder is of Good alignment.
The sword doesn't have to only heal Good characters; that's just something Talak did with his to make it less desirable for others to steal (since in this campaign characters are alignment-less unless they take a feat to represent their tie to that philosophy). The cost of the healing ability is 57,600gp on top of the other enhancements on the sword.
I can build similar versions with either longer durations or more uses per day, but at 3d6 per round they'd be prohibitively expensive. With only 1d6 per round it'd be about the same price for a once-per-day item with a 10-minute duration. The item is created using the rules from Elements of Magic - Revised. If you want me to custom-create a similar "fast healing" type item, let me know and I'll see what I can do.