WHITE SPACE: I love the simple style of this poster and how an image is made just using the hand and the screw. I think that it works well with the space and there is a focus point in the middle of the design.
8 Tips to Power-Up Your Classroom Presentations (via Edutopia) November The author "shares eight slide show tips to power-up your classroom presentations." While the tips are for teachers, they are also useful for student presenters.
The color back grounds frame birds and flowers. For the larger, one-day events, (basically The happening monthly) I like the idea of having a similar event flier design with slightly different features based on the neighborhood, time of year, etc.