Nymph's Kiss is the best option. Only other feat I can think of is in C.Adv., forgot the name, because it sucks so much it's not worth remembering.
Basically, pay a feat, gain 5 skill points. Did I floor you with awesomeness there? Thought not.
EDIT: OMG, can't beleive I forgot! In Races of Eberron, they have racial sub. levels of Rogue for Changelings. These (up to 3, you pick the ones you want) levels give 10 + int skill points. One of them, most happily, is Rogue 1, which means it gets multiplied x4! That first level trades Trapfinding for a slew of semi-useful social skill abilities, including shorter disguise donning time, take 10 on some skills, and so forth.
Now...by being a Changeling you're forfeiting playing a +int race, so there is
some drawback in terms of "getting as many skill points as I possibly can."