I love the idea of collecting globes and clustering them on a desk or bookshelf. Any one of these globes would be great for starting a collection!
And my personal favorite: A Globe Mobile!
Replogle Livingston 12 inch, $74.99, [worldglobes.com]
Replogle Orion 12 inch, $84.99, [worldglobes.com]
Leather Expedition 12'' desk globe, $164.99, [worldglobes.com]
Globe Mobile, $99.90, [1worldglobes.com]