I did a really quick entry for some small map battle over at Facepunch. The standards for Gmod maps are pretty low, but there were actually some really nice entries. The challenge was to make the best map in only 128 units of PLAYABLE space. I decided to do a cool-looking organic scene, since organic settings are my favorite. It actually won for "best looking visuals." Sadly, I was overall beaten by someone who actually cleverly incorporated gameplay in to their tiny map.
World textures by me. Props from various sources (don't ask).