I think @dustmotes approach is great, too. Results are not that different. If you set LEN=TIME in the playback menu you can adjust the granular size with the LEN parameter and then again change the granular position by tweaking the start parameter. You could also combine both techniques for even more unpredictable results. It´s just about finding the sweet spot of your sample.
If you found it may try to use chromatic mode and play a melody with it…