Encahncing Supernatural Abilites

[TC X0 Lt 0X]

Are there any decent options for increasing the DCs or otherwise enhancing Supernatural Abilities?
Disincluding the obvious Ability Focus of course.

[ImperatorK]

Sudden Ability Focus, ToM.

[Ithamar]

Veil of Allure from Sandstorm, it got nerfed bit in MIC.

[ketaro]

Veil of Allure which seems to be from Sandstorm?

+2 to enchantment spells and Cha-based supernatural abilities (And most Su abilities are Cha-based I believe)

14k gp and eye slot wondrous item.

(Oh boo I got beat )

Edit: Actually I think Ithamar is wrong on the nerf comment.
In Sandstorm is says it only helps enchantment spells and Cha-based supernaturals but in MiC it says it helps Enchantment spells and spell-like abilities as well as Cha-based supernaturals AND extraordinaries. For the same price. Its like the opposite of nerfed