Trapped door

[Feerie B.Wolfie]

After browsing through Vietnam War booby traps, I thought this could be another way to slow down zombies. I think the image below pretty much speaks for itself. The "Door Trap" could be crafted using wood sticks, nails and wire. It would condamn the door for the survivors, but if the zombies managed to make it through, it would slow them down.

 

(Here's a description from the website where I found the picture)

Door Trap: Two lengths of bamboo with the cross section heavily spiked and is suspended above the door or opening via a trip wire. When the wire is tripped the trap swings down impaling the victim.