It's 10 p.m. on Halloween night. Do you know where your costume is? If you slacked off and waited for the last minute, or if the ninja turtle suit you coveted disappeared from the costume shop just moments before you arrived, don't despair. We've got you covered with these costumes that are quick, easy and won't cost you a dime.

Switch clothes with your significant other and go as each other. When boys wear girl clothes, it's hilarious. Have the girl draw a mustache on herself and put a cucumber in her underwear. I did this with my girlfriend last year. But then she broke up with me...so maybe you should steer clear of this costume.
Nate Buchik

College is the time to be young and Halloween is the time to be something you're not -so why not be "old" for Halloween? The costume is easy. For guys, throw on a pair of slacks, preferably olive green and to the ankles. Pair that with lace-up dress shoes and a button-down shirt and sweater a la Fred Rogers (may he rest in peace). For girls, put on a shapeless full skirt, also in green or better yet, chocolate brown. On top wear some blouse with enough room to stuff yourself silly with fake, saggy boobs. Lace up dress shoes that look comfortable would be perfect. Now, for the unisex final touches. Gray your hair with baby powder and develop a hunch back. If you have a cane lying around, even better. Your trick will be fooling cashiers everyone for your treat, a senior citizen's discount.
Orli Bendor

All you need for this costume is a clear plastic trash bag, colored balloons, some duck tape and scissors (the scissors are actually optional). In moments these assorted household goods will transform you into a bag of jellybeans. First, inflate your balloons in accordance with your height. The taller you are the more balloons you will be inflating. Next, make two leg holes in the bottom of the bag, two armholes for your arms at the appropriate level and step inside. Finally, fill your bag with the inflated balloons and tape up the top. If you have the extra time, you can make a jellybean sign and tape it to your front. And viol‡! Jellybeans. (A word of precaution: take small steps because nothing would be worse than tearing your bag getting out of the car, losing your jellybeans and showing up at your Halloween venue of choice as a torn trash bag.)
Sarah Wadsworth

Using old sheets, a stapler, a sharpie, and garbage, you could:
A) Go as Charlie Brown as a ghost. Use a sharpie to make huge black spots all over an old white sheet. Tie a pillow around your head (avoid your face) to make your head look huge and round. Cut two eyeholes in the sheet and put it over your head.
B) Go as Fraggle Rock's Garbage Heap. Staple soggy leaves and garbage to an old sheet, cut eyeholes, and put it over your head.
C) Go as any kind of pasta dish by stapling wet pasta to an old sheet and letting it dry. Pour sauce over the sheet when you're ready to go out. Put it over your head. Don't forget eyeholes. Note: This is probably a bad idea
Lindsey Muth

This costume idea came from watching the news this past year. It is easy to do because most of the materials you can find in your own closet, or a friend's closet. Be a molested Catholic schoolboy for Halloween! All you need is an untucked white Polo shirt, a loose tie, messy hair, and navy shorts that have a ripped butt seam. To really play this one off, have the rip expose bloodstained boxers. Dirty your knees a bit and walk with a limp. Also, this is the only outfit that allows you to leave your fly down!
Lisa Schumaier

For practically $0 you can be Steve Bartman, the infamous Cubs fan. All you need is a green turtleneck, a black sweatshirt, a set of headphones and a Cubs hat. Beware however, this costume may attract lynch mobs.
Andrew Salvati

Do you have a roommate? Nothing makes a faster, cheaper and easier costume than being your roommate for Halloween. Just sneak in their room and wear their clothes. Now all you have to do is mock all their personality quirks and flaws. Roommate stutters? Be sure to stutter too. Does your roommate have a wooden leg? Start limping, stubby. Warning: this costume could cost you months of domestic bliss if your housemate gets offended, especially if your roommate is your boyfriend, girlfriend, or wayward sexual partner as well.
Jessica Suarez