May is US National bike month, and is the chosen "bike month" for most northern hemisphere locations. This is when a lot of bike advocacy groups get together and do a lot of special bicycling promotions, such as Bike To Work Day, special outreach, etc...
Plus, we're over 2 years old and never did get around to doing an anniversary contest.
So how about it? Let's celebrate bike month with a contest! Maybe you could win a spiffy t-shirt or very nice water bottle. Maybe a grand prize of a nice light set (a review-winning Cygolite HotShot tail light and some kind of awesome headlight?)
Here's some contests we could imitate: