Event type: Birthday party. Indoors or outdoors: Outdoors. Balloon art type: Simple balloon twisting (e.g. 1-balloon dog): Yes, Detailed balloon art (uses several balloons): No, Decorative balloon sculpture: No, Balloon arch: No, Balloon centerpieces: No. Number of guests: 1-10. Age of guests: 4-6 years old. More info: my son 6th birthday party. he want to be a porliceman or ninja.