Put your thinking caps on and get writing! Just found several anthologies looking for zombie stories - some have super short deadlines:
* FAST DEADLINE! Just saw this: Zombies in Japan flash fiction - Deadline Mar. 15. Flash fiction, 150-1,000 words from Dreamscape Press. No pay.
* Spooky Isles zombie story competition - Zombie Bites Anthology - Deadline: Mar 31 (5 pm UK time)
2,000-6,000 words. Pay to be determined.
** Mystery and Horror LLC is looking for funny (Zombieland, Love at First Bite-type) zombie stories for Strangely Funny II anthology. 2,000-6,000. Pays print copy & $5 advance on royalties. Deadline: May 1.
** Zombiefied II from SkyWarrior Books - 500 to 7,000 words.
Nonfiction, fiction, poetry. Open to most genres. Ebook. Pays: share divided among authors, pays twice annually. Deadline: May 15.