Bamboopictures
Senior Member

Slider shots are meaningless without parallax effect. For short sliders or boring backgrounds, an out-of-focus foreground object can create a more pronounced parrallax effect.
Mounting a series of crystalline /defractive objects a few millimeters in front of the slider can give produce interesting flares and defraction.
For ready made solutions, lensbaby now sells Effect Wands and Effect Wands Expansion Kit that attaches magnetically to flash brackets or IKEA's magnetic knifeholder