Koosh Comet Set for Kids - Bundle with 3 Flying Outdoor Toys with Fidget Spinner for Boys, Girls | Koosh Ball Party Favors Set. This funny little Koosh bundle includes 3 vibrant colored Koosh Comet balls with tails for all time outdoor fun. Why is it named Koosh? These Koosh Flingshots are so aptly named after the sound they made when the Koosh Balls land. Use these Koosh Comets for a fun surprise in your kid's party favors, as outdoor activities at your child's upcoming birthday party, or have them be unforgettable Koosh goodie bag fillers. This officially licensed Koosh Comet set is sure to be a hit with all young kids, boys and girls alike. Set also includes a fidget spinner.