There is something that we like to see everyday and it's our wallpaper: it doesn't matter if you're using a phone or PC. We all love to have a nice wallpaper and feel happy about it.
In that way, I found and interesting vector representation of Gandalf the Grey from The Lord of the Rings.
What are the types of wallpapers you like? People like messages, places, abstracts, characters, etc. What's yours?