Jack! T-shirt by 38Sunsets
You can buy this tee from hreadless.

A Ragdoll’s Love T-shirt by Vincent Trinidad
You can buy this t-shirt from threadless.

Ghosts Of Halloween T-shirt by dale
You can buy this t-shirt from threadless.

Gambling Boogie Man T-shirt by Ibrahim Dilek
You can buy this t-shirt from threadless.

Jack Skellington T-shirt by zinn
You can buy this t-shirt from threadless.

All Jack T-shirt by Marcos
You can buy this t-shirt from threadless.

Knotty Nightmare T-shirt by Jehsee
You can buy this t-shirt from threadless.

Jack-O-Full Moon T-shirt by Marvin Pedro
You can buy this t-shirt from threadless.

I Am the Oogie Boogie T-shirt by ppmid
You can buy this t-shirt from threadless.

Jack Skellington, the pumpkin king of Halloween Town, is bored with doing the same thing every year for Halloween. One day he stumbles into Christmas Town, and is so taken with the idea of Christmas that he tries to get the resident bats, ghouls, and goblins of Halloween town to help him put on Christmas instead of Halloween — but alas, they can’t get it quite right

So i think that you can use some of this t-shirts for the Halloween!
You can see more on this gallery.
 

Strigoi T-shirt Design by mickeyns
from Austria / Member Since 2009

In Romanian mythology, strigoi are the troubled souls of the dead rising from the grave. Some strigoi can be living people with certain magical properties. Some of the properties of the strigoi include: the ability to transform into an animal, invisibility, and the propensity to drain the vitality of victims via blood loss. Strigoi are also known as immortal vampires.

You can buy this tee from designbyhumans.com
 

T-shirt designed by Philip Skundric
You can buy this t-shirt from threadless.com