Google Earth Studio - Let the world tell your story
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Google Earth Pro - Google Earth Pro allows you fly anywhere around the earth to view satellite imagery, maps, 3D building, and terrain, from galaxies in outer space to the canyons of the ocean.
Muzei - Muzei is a live wallpaper that gently refreshes your home screen each day with famous works of art.
SAS.Planet - SASGIS - Качаем карты и спутниковые снимки высокого разрешения из различных источников (google, яндекс.карт, kosmosnimki.ru, digitalglobe).
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.