An approximately accurate 1:100,000,000 scale half model of the earth with a part cut away to show the layers of the core.

Shows North America, Australia, New Zealand, And Indonesia (but not very accurately, I had some trouble embossing them onto the sphere)

Approximately accurate proportions, with the crust slightly exaggerated to be visible, and the continents very exaggerated.
1:100,000,000 scale (1mm = 100km)
In my images I have scaled it to 50% (1:200,000,000) so it will be bigger if you make it.