Besides "it" and "they", of course. I will never get on board "they", it's awkwardly shoehorning a word to cover up a gap in the English lenguage.
(This should probably go on IJBM, but I'm too lazy to make an account there, and it's relevant here due to the amount of LGBT folks)
Comments
The singular they is grammatically correct and has been for a long time.
Made up pronouns like "xe" or whatever are worse.
i'd rather use that than the alternatives, in any case. 'It' is no good because it dehumanizes, and 'he' is misleading.
As for the neologisms, if one of them catches on i'll happily use that, but at the moment it's easier to just use whatever people prefer for themselves and retain 'they' for when the correct gender/pronoun is unknown.
Personally, I think singular "they" does sound a bit awkward, but at the moment it's the best choice. If a new gender-neutral pronoun catches on, I'll use that, but none of them seem likely to do that right now.