Age group(s) for this birthday party activity:
Elementary School
Middle School

Cost of birthday party activity:
$6 per child includes lesson and materials by trained origami artist recommended by Origami USA plus pre-made origami gift bags for the kids to take home and special origami presents for the birthday child.

Birthday party planning information:
Contact Origami USA: http://www.origami-usa.org/ They will recommend an origami artist in your area. The one I used said she even does Bat Mitzvahs and showers.
Origami USA 15 West 77th Street New York, NY 10024-5192
West Coast Origami Guild 2628 29th Street Santa Monica, CA 90405