Customized cookie milkshakes are a perfect idea for a party for girls, but note that many girls often prefer them. Have ice-cream, oat or rice milk, and nut-free cookies at hand.
You need it for an out-of-this-world milkshake party:
1. As many blenders as helpers for adults
2. Cookies of different kinds (gingerbread, chocolate, cocoa, sugar, lemon)
3. In small bowls several different toppings (sprinkles, chocolate chips, almonds, pretzels, fruit)