Almost one-third of workers plan to or are considering dressing up for Halloween at the office, according to Careerbuilder.com’s “Halloween at the Office” survey. Here’s some of the web site’s last-minute costume ideas for trick-or-treating through the cubicles:

A Day Off
Using black lettering, write October 30, 2008 or November 1, 2008 on an orange shirt. When people ask what you are, say, “A day off!”

Running Late
Show up to the office with messy hair and disheveled clothes with your pajamas showing underneath.

Vending Machine
Dress in black and fasten snacks to yourself with the cost of each item displayed. To be really evil, place an “out of order” sign on the real vending machine and charge your co-workers for your snacks. When they pay, make sure you throw their snacks on the ground as the vending machine does.

Office Gossip
Make up fun stories about your co-workers. Fasten the stories to yourself and put the name of your favorite grocery store tabloid on a hat. Hang around the water cooler and invite people to read the latest news.

Pink Slip
No one ever wants to be served the dreaded pink slip at work. Wear a pink slip over your work clothes and chase your co-workers.

Post-it Note
Wear all yellow. When people say “trick or treat” at your cube, pass out real Post-it notes.

Red Tape
Buy red tape and tape it all over your clothes and cubicle. When people ask what you are, make them cut through some red tape to get the answer.

Wrap yourself in aluminum foil and give yourself an aluminum swan hat. Place a sign on your chest that says, “Anything left after 4pm on Friday will be thrown away!”

Happy Hour
Wrap a tie around your head and carry around an empty (yes, empty) martini glass with you throughout the day. At 5pm, scream, “Happy hour!”

Carry a mannequin or doll head around with you, holding it by the hair.