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11 Halloween Costume Ideas for Kids

11 detailed, easy DIY Halloween costume ideas for 2026 — mermaid, astronaut, scarecrow, fairy, detective, fortune teller, archaeologist, skeleton and more — each with step-by-step instructions using things you likely already have at home.

Last updated: 2nd September 2026

Halloween is the perfect time for kids to unleash their creativity through fun, unique costumes. If you're looking for ideas that stand out and make your child's Halloween extra special, here are eleven detailed suggestions to get started.


DIY Bubble Bath Costume

Transform your child into a cute and bubbly bath-time favorite. Use a white dress or t-shirt as the base and glue white cotton balls all over it to represent bubbles. Add a shower cap and a rubber duck as accessories to complete the look.

Spooky Scarecrow Costume

Create a scarecrow costume with a twist. Dress your child in a flannel shirt, overalls, and a floppy hat. Use face paint to add friendly scarecrow features like stitched lips and rosy cheeks. Stuff the overalls with straw to complete the look.

Scarecrow costume idea for Halloween, with a flannel shirt, overalls and painted stitched lips

Galactic Astronaut Costume

Let your little one explore the cosmos as an astronaut. Dress them in a white or silver jumpsuit and attach NASA-style patches. Build a jetpack from cardboard and silver foil, and add a clear plastic helmet for an out-of-this-world effect.

Galactic astronaut costume idea for Halloween with a silver jumpsuit and cardboard jetpack

Magical Mermaid Costume

Turn your child into a mystical mermaid. Use a shimmery dress or leotard as the base and attach iridescent scales made of craft foam or fabric. Add a sparkly tail made from tulle. Complete the look with a seashell headband and a starfish wand.

Magical mermaid costume idea for Halloween with an iridescent scale skirt and seashell headband

Enchanting Fairy Costume

Transform your child into a whimsical fairy. Use a pastel-colored dress or leotard as the base and attach fairy wings made of wire and sheer fabric. Add a flower crown, a magic wand, and some glitter to complete the enchanting look.

Enchanting fairy costume idea for Halloween with wire-and-fabric wings and a flower crown

Steampunk Aviator Costume

Create a steampunk-inspired aviator look. Dress your child in a brown leather jacket, aviator goggles, and a pilot's cap. Accessorize with gear and cog details, and add some temporary tattoos to resemble aviation-inspired tattoos.

Steampunk aviator costume idea for Halloween with a leather jacket and aviator goggles

Playful Pinata Costume

Turn your child into a walking, talking pinata. Use a cardboard box and cut out holes for arms, legs, and head. Cover the box with colorful tissue paper fringe. Add a party hat and a small bag of candy for an adorable touch.

Dashing Detective Costume

Let your little one channel their inner detective. Dress them in a trench coat, fedora hat, and sunglasses. Provide them with a magnifying glass and a notebook to jot down clues.

Dashing detective costume idea for Halloween with a trench coat, fedora and magnifying glass

Glamorous Fortune Teller Costume

Create a mystical fortune teller look. Dress your child in a flowing bohemian-style dress and adorn them with scarves, bangles, and beaded necklaces. Add a headscarf and give them a play crystal ball to complete the look.

Glamorous fortune teller costume idea for Halloween with scarves, bangles and a play crystal ball

Adventurous Archaeologist Costume

Transform your child into a daring archaeologist. Dress them in khaki pants, a safari vest, and a wide-brimmed hat. Add a toy shovel and a brush for uncovering "ancient artifacts."

Adventurous archaeologist costume idea for Halloween with khaki, a safari vest and a wide-brimmed hat

Skeleton Costume

A reliable Halloween classic. Start with a black leotard and tights, then use white tape or paint to mark on ribs and bones. Apply white face makeup with black around the eyes to finish the look.

Skeleton costume idea for Halloween with painted bones on black clothing and white face makeup

Remember to involve your child in the costume-making process — they might have their own imaginative ideas to contribute. These detailed Halloween costume ideas should make this year's celebration one to remember.

Quick safety check before heading out:

  • Choose flame-resistant fabrics and keep costumes away from jack-o'-lantern candles.
  • Hem or pin any part that drags on the ground — trailing fabric is a common trip hazard on dark steps.
  • Prefer face paint over a full mask, since a mask can slip and block a child's view of the road.
  • Add reflective tape or a small light so drivers can see your child after dark.

For the full checklist, see our Halloween safety tips page.

Common questions about these costumes

What makes a Halloween costume safe for trick-or-treating?

A safe costume is flame-resistant, fits well enough that hems don't drag on the ground or steps, and doesn't restrict vision. Face paint is generally safer than a full mask, since a mask can slip and block a child's view of traffic. Adding reflective tape or a small light makes a child easier for drivers to see after dark.

What are the easiest Halloween costumes to make at home?

The skeleton costume and the scarecrow costume are the quickest of the ones on this page, since both rely mainly on face paint and clothes you likely already own, rather than sewing or building props.

How can I make a costume warmer for a cold Halloween night?

Layer a long-sleeved thermal top and leggings underneath the costume in a similar colour to the outfit, so the extra layer barely shows, and add a coat in a colour that matches or complements the costume for the walk between houses.

Getting ready for the night itself? Check our full Halloween safety tips, browse Halloween party ideas, or take the Halloween quiz while everyone's costumes dry.