These iridescent white mouse ears are cute for a day out at Disney or other theme park, or for costumed birthday parties, weddings, and more. The one-size-fits-most band includes a sequined bow. This seller offers many different styles and patterns in addition to these sequined mouse ears.

The purple "ears" here look like seashells, and the sequined bow is an under-the-sea aquamarine color. Get these mouse ear headbands for your mermaid costume or Ariel Disney-bounding outfit. Text along the side of the headband reads "Mermaid Hair Don't Care". 

Add bling to your animal costume with this fun set of shiny golden sequined ears headband. The attached bow has a cheetah animal print, making this a wild choice for an animal-themed party or a visit to your local zoo.

These colorful ears are perfect for Pride Month or anytime the joy of a rainbow is called for. Mixed sequins in a variety of colors are blended together on the ears; the headband's bow has a more uniform striped rainbow pattern.

Add holiday whimsy to your look without going all out when you wear this cute black and orange Halloween mouse ear headband. The ears are orange with a black spiderweb pattern and the matching black bow is covered in sequins for extra bling. A shiny jack-o-lantern motif is included in the center of the bow.

Pick up 8 different super hero costume sets with this purchase. You'll get capes, masks, and slap bracelets for each character, including Thor, Captain America, Superman, and Batman.

Your kids can have fun dressing up like different styles of princess with this unique set. You'll get four different tutus, character headbands including ones for unicorn and mermaid, a pair of rainbow wings, and a magic wand. 

Dress up as real heroes with this set that includes firefighter and police officer jumpsuits with costume hats. Mix it up with the other two comic style superhero outfits that include masks. This set comes with its own storage trunk for added value. 

With this Prime Day deal, you'll save 23% off the regular price on this four unicorn costume set that comes with 4 tutus, 4 unicorn headbands, rainbow wings, pink wings, a magic wand, and more. Store the outfits in the included trunk when not in use.

Pick up the pieces for three easy real-world hero costumes with this Prime Day deal. You'll get elements to play a firefighter (vest, hat, walkie-talkie, and extinguisher); a construction worker (vest, helmet, and toolset); or a SWAT Team officer (vest, helmet, walkie-talkie, whistle, and handcuffs). 

Dress up as Leonardo, Michelangelo, Donatello, or Raphael with this fun set of TMNT hero masks and capes. The already affordable set is an additional 20% off for Prime Day.

Add four different costumes to your dress up trunk with this purchase. Each outfit comes with a hat or headpiece, costume top, and costume pants. Dress up as a Native American, Cowboy, Pirate, or Firefighter!

This is an easy costume that has an elaborate look. You'll get the flower pot bottoms and the big Venus Flytrap top that includes the plant mouth head covering. Wear this over almost any outfit -- it's best over a green long sleeve top and brown pants. The costume is one size fits most. Note that several reviewers found the costume was better when they made some minor adjustments, like adding padding to the flower pot, or reinforcing the flower head edge.

This costume is also perfect for a Little Shop of Horrors themed event -- you're Audrey II!

This costume includes a black tunic top with attached wings, and a big bug-eyed fly mask with attached antennae. Wear this with black pants and a pair of black gloves to complete the look. The costume is one size fits most and is highly rated. 

Other novelty costume ideas for this fly outfit: you're a bar fly for a bar-hopping event; you're a fly caught in someone's web, you're the fly on Mike Pence's head.

These fun insect wings are marketed for use as part of a bee costume, but the long, narrow shape and holographic, translucent wings work very well for a cicada, too. The wings are suitable for use by kids or adults; they are worn on the shoulders with adjustable, elastic straps. Pair these with a black skinsuit and maybe some DIY red bug eyes to make a more complete cicada look.

Get ready to give someone a laugh or a fright with this set of four realistic model cicadas. The little replica insects are made of clay and wire. While some of us will be seeing cicadas everywhere we go during parts of the spring and summer, this set of gag cicadas can be used to play pranks on your friends and family. These can also be used as part of a creative DIY costume! For example, you could buy multiple sets to make your own "walking plague" costume.