Rainbow cookies Nothing says happiness and fun more than rainbow-themed treats, and these eye-popping cookies are a prime example! Bonus: They taste as good as they look.
Rainbow Sponge Painting - fun rainbow art for kids that explores colour mixing, blending and textures. A fun process art kids painting technique.
Put chocolates instead
Pinterest Regenbogen Kekse Tutorial: Ein Test | Pinspiration
Diesen Regenbogenkuchen LIEBEN Kinder: http://www.gofeminin.de/familie/hacks-kindergeburtstag-s1832179.html