Stop! Hammer time ... you cant touch this ... (Ya, cheap joke, I'know, but I wonder how many people will even get it) ...
http://www.mcortechnologies.com/
If this is your first time hearing about MCor and 3d printing, they use 3d printing technology based on paper and glue which can make very detailed and colorful models.
Update (28.8.2014.):
Looks like this hammer is too realistic for airport security: