Here are nine easy group Halloween costumes if you don't have a lot of time or money!! They're really easy to make for groups big or small, and inexpensive too!
Four Seasons (and Vivaldi!)
GiphyBe as creative as you want when making the Four Seasons costumes; bundle up for winter, whip out your best Hawaiian shirt for summer, so on and so on. And it's even better if someone in your group dresses up as Vivaldi! (Bonus points if you get the joke)
Care Bears
GiphyYou can personalize this costume however you want with just a plain color shirt, white felt, and some markers. Making some ears from felt and cotton balls isn't that hard or expensive either!
Cards Against Humanity
GiphyThis will definitely be a hit with the crowd on Halloween. Feel free to personalize these cards however you want, and mixing-and-matching will make for some hilarious group photos.
Fruit (Ninja?)
GiphyMaking a fruit costume isn't that hard because all you have to do is decorate a shirt, and you can really get creative and make any fruit you want. If you want to get super creative, you can harken back to 2010 and have some people in your group dress up as ninjas; all it takes is a few people to wear all black in addition to your creative fruit numbers and voila, Fruit Ninja!
M&Ms (or Skittles!)
GiphyAll you need is a T-shirt and some white felt or paint, easy as that! And you can have as many people in as many different colors if you want, so this is a great easy costume for big groups! And if you're more of a Skittles person, all you have to do is change the' to an 'S' and you're all set.
Teenage Mutant Ninja Turtles
GiphyA green shirt and some fabric paint makes this costume incredibly easy for anyone to make. Extra points if you make felt bandannas and/or tin cooking pan shells!
Dalmations (and Cruella)
GiphyThe only thing you need for this costume is a white shirt and a black marker, and maybe some black face paint as well. One person in your group could even throw on a dress and some white gloves and be Cruella!
Mimes
GiphyAll you need is black jeans, a striped shirt, and some face paint and you have the perfect mime costume! It's great for big groups and if anything, you'll only need to buy a cheap striped shirt and face paint, so it's very inexpensive too!
Kiss
GiphyIf you want to go more hardcore than a mime but still want some awesome face paint, the band, Kiss is a great option! Just throw on all black, paint your face, and stick your tongue out and you've got it on lock!