you should try asking Kentelo! He made one completely out of craft foam!!!! see the amazing picture in his gallery here:
I have been thinking of making a Ra costume, even though I am a girl ^^; ...but then decided I would die in the process of making his mask >_< althoiugh I oculd make one without the mask...but then it just wouldn't seem like Ra.......
by the way, what Egyptian costuming websites have you been looking at? I am interested in seeing them!
and oh yeah! The Stargate movie is one of my all time favoriytes! (the show also)! I am glad to meet another fan!!!!