Fourth vector! This one's a request by littleInferno (aka Sigmar1994) and is now the background image to a song he's been working on in the past few weeks. Check it out here: [link]
The sugarcubes are actually part of a screenshot of a scene-build I made in Garry's Mod. The aim of this project was to blend a 2D vector into a 3D world, and I guess it turned out alright.
EDIT: I was told that the sugarcube wall foreground in this picture differs from the one in Sigmar1994's video, which uses Gordon-Weedman's version. My upload on the other hand uses my template from a previous version, but apparently Gordon's version - despite being subtle - is also visible in this upload here. Long story short, Gordon helped in the making of this drawing; even if not much, he deserves some credit. Hope this clears some misunderstandings up!