My 7 year-old has decided on a Halo 3 theme for his birthday party. It's going to be a shared party with his daddy who just returned from Iraq. I have searched and haven't found any place that offers Halo party supplies, so I am going to have to kind of make this up as I go. The invites will be like paper 360 controllers and I am hoping to do the cake like a (3D) Master Chief helmet. If that turns out to be too ambitious I will just do a round cake with the Halo 3 logo. We're going to s...