Alright, I've started up a bit of a challenge for the heck of it. Now, take a look at this GIF of a room from Braid...
Looks freakn' awesome, no? Most of this room is composed of textured particles. This is what it looks like without the particles. This is the room with the particles only. For more insight into how it was done, Look here.
The challenge? Create a room that uses a similar effect using particles, doesn't have to be clouds, use your imagination. Fill your room with life! The winner will be the one with the most living, awesome-looking particle room. Bonus points if it doesn't choke the system in the process. You guys have a week!