2 plug-ins :
Loop the source randomly, more or less often, but syncronised to tempo. And add some fxs (reverb, bitcrush & filter) by the same way. The loop reading can also be in rewind mode (ever or randomly).
Same thing, but without the looper effect, with 2 fxs more, flanger and realtime pitchshifter.
Freeware by D'incise