Here's my take on it: Being the Bryce Forum and all Probably all Bryce would be best. Kixum on Carrara Forum had and occasionally still has I think "15 minute challenges" or something like that. Something simple that would take less than a day to do. He'd put an object up and try to get everyone to duplicate it as best they could. As a variation on that, whoever figures out how to do it correctly and posts their own image and explaination first, could either expand on it or start a new challenge.

An example - using 4 terrains make the glass as pictured above. (Just an example but you get the idea.) That way if someone drops out you all can keep going. Of course Agent Smith and/or Clay would need to be involved or approve, I would think. - TJ