Jonathan, you talk about causing commotion and rivalry. It wouldn't cause commotion and rivalry if members didn't get so aggravated that someone is more dedicated than they are. If you are happy to send me over 250M RSGP then please do so, and you'll get to choose the contest. Although, when It's my money I'm sacrificing, which I don't even have to, I can take all the money users donate and buy myself a brand new computer, although I'm giving it back to the forum. The least I can get in return is an active forum, which mind you, this contest didn't get. We've had the same activity and traffic just like the time we didn't even have contests.
Also, why would I give away money if it wouldn't benefit the forum? Tutorial of the month, awesome. Adds more work for Staff to check for stolen work, who decides the best guide, what is the precedent.
Another person suggested a likes contest. Simple scenario. You like my post, I'll like yours. The person who has the most time to message his friends wins.
What other suggestions. Referral contest = No. Users will post a tumblr topic like they did before, refer 250 members and bam! Nothing from those users. Just a clogged up, 1mb larger database.