A prize that requires effort on my part? That wasn't in the fine print! What kind of crazy scam is this?!
I'll give this some thought and get back to you in the next couple of days. If somepony had actually written a campaign journal for the D&D campaign I just finished, I'd have totally gone with scenes from that. There's a few that I think you'd jump at the chance to try. But since nopony did, I'll have to think of something else.