Here is an interesting special effect one of my students came up with. All it takes is one good idea to turn the mundane into the unique.
Below, you see a night scene enhanced by unique streaks of color. This first one was painted in with green, white and red dots. While you might glance this image in a group of photos without the color, with the color you would surely stop and gaze!
And here you see the Lens Flare filter from Photoshop applied to give a spotlight effect to an urban scene.
Just a couple bright spots of color, creatively applied, and a brand new image appears!
Alfred North Whitehead said, "The vitality of thought is an adventure. Ideas won't keep. Something must be done about them."