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The ghosts and goblins may be prowling about for tonight and tonight only, but the DIY-ers are keeping the terror alive. In fact, the Instructables.com DIY Halloween Contest is open for entries until November 9, and there are over $7,000 worth of prizes up for grabs.

Check out our new gallery for some of the coolest entries so far, from the Chestburster to the Ghostbusters Proton Pack. Enter your own spooky creations; PopSci.com will be watching, and judging, so share your step-by-steps… or else…

Happy Halloween!

"Chestburster

Chestburster Costume

Disgusting? You bet? Hilarious? Without a doubt. This Chestburster costume might not be for the faint of heart, but heck, if not now, when?
"Mega

Mega Man Pumpkin

A Dremel adds precision to the carving and makes Mega Man’s geeky awesome face really pop.
"Multiple

Multiple Stab wound Costume for Under $5

Co-workers gone postal? Nothing quite says 5 pm on a Friday like a chestful of pens.
"Ghostbusters

Ghostbusters Proton Pack

We’ve been singing the Ghostbusters theme songs with the 24+ parts list as the lyrics. We’d share it but we’re too in awe to type it out. Instead we’ll leave you with the immortal words of Dr. Venkman: “Back off man. I’m a scientist!”
"Arc

Arc Reactor and Iron Man Mask

We can’t all be genius billionaire engineers. Fortunately, we don’t have to be.
"Phot-o-Lantern"

Phot-o-Lantern

It’s Dwight! On a pumpkin! OMG it’s Dwight on a pumpkin!! Fine, so you can use this Instructable to turn any photo into a Jack-o-Lantern. But why the hell would you?
"Blood

Blood Spurting Knife Wound

You really have to check out the video to get the full effect. But first, make sure you’ve got a bucket handy.
"How

How to Create Realistic Facial Prosthesis

Terrifying. Simply terrifying. Excuse us for a moment while we cry in the corner.
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