I like how the artist began with the design concept of a guitar but strayed away from that and created a scene with it. I think the simplicity of the piece allows the guitar to still be seen. I love how you can see both the scene and the guitar easily.
"Vertical Landscape" by Eiko Ojala. It looks like a paper landscape but the artist actually works digitally and hand-draws all the elements to look like they're cut out of people. (Hint: the shadows help!