It could include mapping say, try to build a Mercedes using nothing but world brushes and these 4 texures. Best-looking 'Benz wins.
The point of these "mini" compos is that they take relatively less time to complete than the regular ones, so you could have a new one, say every week. They, as i envision them would focus on small details like props, prefabs, sounds, and textures, but could really include anything associated with mapping.
If anyone is interested, please post a suggestion, and we could pick the best one. We could do this informally, or not, depending on how many people are interested.
A suggestion: Build the most interesting prop you can think of, whose dimesions will not exceed a 64 unit cube. Only Half-life textures can be used, included light-emitting and animated. NO Entities aloud.
What do you think?