Back: Bamboo (renewable resource!)
Wallpaper: Pic of my 3 kids (non-parents just don't understand)
Greeting: I Have the Power!
Engraving: Chad Phillips (pretty handy for when it falls out of my pocket, car, gym bag, etc.)
If anyone is interested, I'm keeping the best links on the Moto X, including a link this contest, over at okaygooglenow