Look at the mall directory. There used to be a costume place there. You might also call Central Baptist, they put on a huge Christmas program and might have a costume.
I for one would find a Hippie Jesus pretty entertaining. Reminds me of all the biblical movies from the 60's (was it the 60's)? There was one that made a kind of Surfer Jesus.
Check out card and party factory in the Best Buy shopping center. They have all sorts of costumes and you could probably get a cheap wig there and trim it up to work.