24 Plastic Harmonicas 8 Hole - Kids Toys Colorful 2.75" Harmonica Party Favor - Play Kreative TM 24 plastic harmonicas 8 hole - kids toys colorful 2. 75" harmonica party favor. Give your music some color! A delightful giveaway kids and adults will love. Great as party favors, these instruments will bring out a child's inner musician and provide hours of enjoyment. Colorful and great sounding! Good for learning & education. The harmonica is the perfect size for younger children to begin developing their musical aptitude.