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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 Alien 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!

A Mega Man pumpkin lit up at night.
A Dremel adds precision to the carving and makes Mega Man’s geeky awesome face really pop. craineum
An Alien Chestburster costume, showing a man pretending to be dead on the floor with an alien bursting bloodily out of his chest and a yellow facehugger alien on his face.
Disgusting? You bet? Hilarious? Without a doubt. This Chestburster costume might not be for the faint of heart, but heck, if not now, when? gmichaelorr
A man wearing a Ghostbusters Proton Pack on his back in a basement.
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!” depotdevoid
A glowing arc reactor and an Iron Man mask with light-up eyes.
We can’t all be genius billionaire engineers. Fortunately, we don’t have to be. msraynsford
A man's chest in a white buttondown shirt with several blue pens stuck in it as part of a Halloween costume mimicking stab wounds.
Co-workers gone postal? Nothing quite says 5 p.m. on a Friday like a chestful of pens. scooter76
A Dwight Schrute Jack-o-lantern made with a backlit photo of Dwight Schrute from The Office.
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? cainunable
A Halloween costume with a plastic cleaver that looks to be embedded in a man's forearm, complete with fake blood.
You really have to check out the video to get the full effect. But first, make sure you’ve got a bucket handy. Kipkay
A realistic facial prosthesis Halloween costume of a man with gouged-out eyes.
Terrifying. Simply terrifying. Excuse us for a moment while we cry in the corner. eskimojo
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