Not sure whether I can actually count as a pagan, but at least I do work with some gender-bending deities. Well, work with may not be the right label, being a fan of might be more accurate.
Being a transguy myself it isn't really surprising that I also like my deities non-binary. As a pantheist I believe in the divine to be beyond any such dualities anyway.
It seems a bit more common among Satanists than among worshipers of other deities to call their patron deity an it or a she although it's more commonly depicted as a he. At least calling it an it might have to do with many of us believing not in personal deities anyway, but rather conceptualizing it as a force of some kind.
Regarding more traditionally gender-bending deities, I'm especially fond of Baphomet as a symbol of the unification of opposites.
In my youth I also was very much into Loki; nowadays I find Angrboða almost a bit more interesting. She's not actually gender-bending in the traditional sense but she did get him pregnant trice (even if not in any normal way but by being burned and him eating her heart).
I know some others, like Ishtar for example, but I never really connected with them.
Also, do you mean gender-bending only in the actual 'physical' characteristics? Or would someone like Athena as a female warrior also count as gender-bending?
Regarding practical means, one issue is that my native language, German, makes it rather difficult to speak in a gender-neutral way. I prefer using English in prayers anyway, though.