Invented gender pronouns
Standard pronouns:

he, him, his, his, himself
she, her, her, hers, herself
they, them, their, theirs, themselves

Invented pronouns, with forms listed in the same order:

Ohio U.:

Ze, Zim, Zir, Zirs, Zirself
Sie/Zie, Hir, Hir, Hirs, Hirself
Zie, Zir, Zir, Zirs, ZIrself
Ey, Em, Eir, Eirs, Eirself
Per, Per, Pers, Pers, Persself
They, Them, Their, Theirs, Themself

UWM:

Same as Ohio U. plus these:
ae, aer, aer, aers, aerself
fae, faer, faer, faers, faerself
e, em, eir, eirs, eirself
ve, ver, vis, vis, verself
xe, xem, xyr, xyrs, xemself
tey, ter, tem, ters, terself

Additionally to Mr., Mrs., Ms., the designation "Mx." is allowed by Goucher College.

Most other colleges that officially allow alternative pronouns will admit only "no pronoun", "ze" and "they" as alternatives.