I think...I work Saturday nights and never see the contests.
With that said, I think an exercise in writing a short essay might be helpful. Give a somewhat broad topic and let people pick parts of the topic to discuss in their own essays. Have the T11 staff and moderators read and critique the essays and give the top 3 prizes maybe. Have a minimum word count (750 or so) and give the topic out a week in advance (at the end of whatever contest you're having) so people can think about it and write a well-thought out essay over the course of a while.
Possible Topics: Presenting Magic. What is Magic? Why are you a Magician? What amazes you outside of magic?
Or anything else you can think of. Just make it something that can be approached by at least two sides and see where it goes.
How about creating a magic trick where the effect is great, but the props are inherently funny to begin with. Maybe a vanish and reproduction of a rubber chicken or instead of a deck of cards that are all different you're using blank index cards for an ambitious sequence.
Holiday themed magic trick. It can be any winter holiday (I'm sure there are a few people who don't celebrate christmas on the boards) and can be done with any objects (cards, coins, everyday objects...) but has to have some connection with the holidays.
Judged based on creativity (presentation and trick wise) and execution (a clever trick performed poorly is still a poorly performed trick...)
Maybe give overnight to do it, post it Saturday and have the videos due Sunday.
I think we should do a SNC based around presentation. Inspired off of Derren Brown's Enigma, I think we should have a list of possible basic tricks or plots to select one from, and from that one create our own presentation or spin on it. Just saying...