Head on over to the NASA Visible Earth website and collect some hi-rez clouds, hurricanes, etc. The hi-rez terrain imagery of Afganistan, the Brazilian Rain Forest, etc. also make great terrain maps in Vue, once you clean them up a little in your favorite image editing app.

Personally, I recommend editing them all to squares (5K, 6K up to 8K resolution) as they map more easily that way.