I noticed the Oregon Zoo in Portland had a Sponge Bob ride running until Memorial Day and they host birthday parties for 8 or more...maybe they would provide the character for a party there?
If you want to hire someone to come over, a singing telegram guy in Porland called Polka Dot Wizard says he dresses up like Sponge Bob (www.funduo.com) for $75. All Things Entertainment is a Portland/Seattle company that provides all sorts of party performers including popular children's characters for $110 per hour and can be reached at 971-645-4372.
