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The 11-year-old will love these homemade fits just as much as the toddler.

Whether it's Halloween night and you are struggling to whip together a last-minute costume for the kids, or a DIY Halloween outfit was always part of the trick-or-treating plan, there are plenty of easy and quick costumes you can assemble with materials you already have at home. And the best part about DIY Halloween costumes for kids is that you can get the toddlers and teens involved in the planning and designing for their trick-or-treating costume. If you need an idea ASAP or you are reading this articles months prior to October, these DIY Halloween costumes for kids are perfect for every age and style.

Some of these costume ideas are too cute to handle, while other costumes are so punny you and the kids will be laughing as you help them get dressed on October 31. You can also gather a group of neighborhood friends to dress up as a DIY group costume for hours of crafting (and future trick-or-treating). Even your tweens will be excited to show off their DIY creations, while the younger kids will be counting down the days until they can sport their outfit at school. From the best costumes for girls and boys to gender-neutral costume ideas, these 70 best DIY Halloween costumes for kids are guaranteed showstoppers (without too much time or money spent on your part!).

All you need to turn your kid into a knight in shining armor is a gray sweatsuit, a bike helmet, some cardboard, and lots of tin foil.

This DIY goldfish costume for toddlers looks impressive but is actually so easy — cover an orange sweatshirt with dyed orange coffee filters for "scales" and attach eyes to the hoodie.

You'd be hard-pressed to find a sweeter costume than this DIY creation.

Get the Cotton Candy Salesperson Costume tutorial.

All you need are some white pants, a white long-sleeved top, and a white curtain panel to help your kid become Frankenstein's bride.

Get the Bride of Frankenstein Costume tutorial.

Use a milk carton and green spray paint to turn your kid into Dr. Frankenstein's terrifying creation.

Get the Frankenstein's Monster Costume tutorial.

If she loves candy corn, crown her the queen of the candy with this easy DIY costume.

Get the Candy Corn Princess Costume tutorial.

There's no monkeying around with this cute primate: Hang out in brown fleece onesie pajamas with a tummy covered in darker brown felt to channel the sweet animal.

Get the Mini Monkey Costume tutorial.

Add some rainbow felt stripes to the sleeves of a blue sweatsuit, spray paint an old pot gold, and voilà! Easiest costume ever.

Fill clear plastic garbage bags with packing popcorn and black pom poms, and label them "S" and "P" — your kids will be the cutest seasonings around!

You can use items found in your house, including one of Dad's white button downs and a measuring cup, to create a mad scientist costume!

Get the Mad Scientist Costume tutorial.

Wrap black garbage bags around white batting and top with "roe" (a.k.a. orange balloons), and you've got a costume that looks good enough to eat!

Rummage through your closets and you can probably find everything you need to recreate these Robin Hood-inspired costumes.

Get the Robin Hood Costume tutorial.

Even the least crafty parents can manage to put together this precious ladybug costume.

Get the Ladybug Costume tutorial.

Your kid's friends will be green with envy when they see this creative amphibian costume.

Get the Frog Costume tutorial.

There's nothing cheesy about this adorable cardboard taco costume.

Get the Crunchy Taco Costume tutorial.

A red raincoat trimmed with yellow and black tape easily becomes a firefighter's coat with this clever costume.

Get the Firefighter Costume tutorial.

This DIY bear costume is sweet as honey (and it will barely take any effort to make).

Get the Bear Costume tutorial.

To make this adorable gumball machine costume, simply glue multi-colored pom-poms onto a white tank top and a black headband. Make sure to add a DIY 25¢ sign to a red skirt so everyone gets the picture.

Pool noodles become spider legs when you put together this creepy, crawly costume.

Get the Spider Costume tutorial.

This clever White Rabbit outfit takes the traditional bunny costume to the next level.

Get the White Rabbit Costume tutorial.

Bike helmet? Check. Oven mitts? Check. Rain boots? Check. Put these household items together and watch your kid channel Neil Armstrong on his next trick-or-treating expedition.

Get the Astronaut Costume tutorial.

You'll definitely take pride in this scary wolf costume, which will leave your kid feeling like howling at the moon.

Get the Wandering Wolfman Costume tutorial.

Empty soda bottles become an oxygen tank in this easy-to-make scuba diver costume.

Get the Scuba Diver Costume tutorial.

Let your child spread their wings with some green felt and a touch of face paint.

Get the Bat Boy Costume tutorial.

No buried treasure is needed to put together this easy DIY pirate getup.

Get the DIY Pirate Costume tutorial.

To transform your kiddo into a life-size gnome, cut a beard shape out of white felt with long sideburn sides. Next, use a glue gun to attach velcro to the top of each sideburn and cover the remaining felt with cotton balls, attaching them with small dots of hot glue. Then, cut two eyebrow shapes out of white felt, attach velcro onto the back of the eyebrows with glue, and attach the velcro eyebrows with hot glue to the fold of a beanie. Be sure to also cover the front with cotton balls, attaching them with small dots of hot glue. Finally, attach the velcro on the sideburns to the inside of the beanie.

To make this punny costume, you simply need to round up a black beret, a striped tee, a red scarf, and a piece of "toast" crafted from cardboard. Punch two holes in the top of the bread and tie string to them to wear around your neck.

Fry up the most delicious egg costume yet.

Get the DIY Fried Egg Costume tutorial at Studio DIY.

This easy last-minute costume will make any Harry Potter fans in the house excited to escape into the famous world of wizards, witches, and magic for the night.

Get the Harry Potter Halloween Costumes tutorial at See Vanessa Craft.

To dress your kid up as a professional bookworm, get her a plaid skirt and cardigan combo fit for the library with a name tag, glasses, and canvas tote full of books.

RELATED: 30 Easy Book Character Costume Ideas for Kids