I wonder if you can actually buy one of these? Or the two classics pictured near the bottom of the page here?

This in a Mars version would be every bit as gaudy and kitschy -- yet, somehow geekily cool. I'll pass on this one, though, thankyaveramuch.

Now, there aren't any Lowellian globes here, but you can download a spiffy contour-colored USGS topo map of Mars' real terrain (and it's even spiffier in the 18.9Mb PDF version).