Made this for our last animation project - a new animator missed the noise controller in Max, so this filled the gap and was useful for a lot of things.
Basically, it gives random (yet deterministic) animation on an object’s location, rotation and scale, with variable speed scale. We used it for all sorts of things like applying it to a lamp, for a random flicker/shadow movement from a candle flame, or on a large scale, subtle swaying movements of a ship on the ocean.
Note: Due to a bug/limitation in pyconstraints, the constraint won’t work if it doesn’t have a target. Since this constraint doesn’t need a target, you can just insert the object’s own name into the target field and it should go fine.
demo .blend: http://mke3.net/projects/bpython/constraint_noise.blend
script itself: http://mke3.net/projects/bpython/Constraint_Noise-1.0.py