The other answers have covered most of the bases. Miracle and Wish explicitly work. Polymorph Any Object probably works. Working with the DM can make just about anything work, through Rule Zero/DM fiat.

There's also the "**rebuild quest**" concept. It basically sets up a "sidequest" which results in you being able to change your character's race. It could, however, derail the campaign a bit, so DM approval only.

Players Handbook II, page 198:
> Race rebuilding
>
> Changing your character's race [...] isn't unknown in
> fantasy[.] Whatever your reason, the race rebuilding rules show you
> how to keep playing the same person in a new body.
>
> This method of rebuilding can also be used to recreate characters
> brought back by **reincarnate** and similar effects that restore
> characters to life as members of different races.