Sometimes I'll take an atmospheric sort of sample and put down one or two trigs, and then apply a random LFO to the start point. You might have to turn slices on to get it to work, I can't recall right now, but it will play back the sample at random points in time. With the right sample, this can be great. You might need to raise the attack a touch to keep it from clicking and popping at the transition.
Also you can turn the stereo setting on for the delay, but it only works right (ping-pong) if the sample itself has stereo content. If your sample is in mono, you can apply an LFO to the panning parameter. This way, the sample pans on it's own, and the delay then pans the repeats independently. You can also use the stereo imaging of the chorus and flanger effects before the delay to get a similar effect.
Obviously, the Dark Reverb with lots of decay can make anything sound enormous. With a neighbor track you can use both the delay and the reverb. If you can't eat up that many tracks, sample the track with one chain of effects and then put that new, effected sample on a track with more effects and LFO's. Then do it again
Hope this helps!