make a nice smooth waveform using [waveform~] and then start drawing in some skinny peak lines, it'll get glitchy quick. you can also look at noise~, click~, etc.
Try playing things back at different sig~ rates (via groove~) and maybe look to gizmo~ for added flexibility. sometimes playing a familiar sample ultra-slow but pitch-shifted way up will do incredibly bizarre things to it, and vice-versa. patch up a sample player with control over sig~ and gizmo~ and you'll have hours of fun regardless :)