Take pictures with a focus on a certain colour.
Take a WALK and stop every 50 steps. Take 3 pictures: one to the FRONT, one to the LEFT and one to the RIGHT. Do the same at the next stop, etc.
Make a SLIDESHOW and share on Slideshare.
Make a slideshow with pictures taken from the point of view of small children.
Hold the camera at the height of your knee.
Make a series of selfies to show the city.
Suggested tool Slidetalk: