Here's what I've been spending part of my time doing- I created this system which enables the user to create melodies and chord progressions using the dice and a reference chart.  
       This is for working with both major and minor pentatonic (5 note) scales, In addition to the dice you get a reference chart showing the notes of the major and minor scales and what scale degree they fall under. The dice, which roll numbers 1-5, are gently rolled on a level surface after you've chosen which scale you want to work with. You then refer to the chart to see which notes align to which scale degrees. Line the dice up, left to right, and play the sequence of notes. And presto! You now have a new  note melody to work with.  If you get a few of the same number popping up, you can try playing an octave higher or lower of that note or simply re roll one or two of the dice to have a different number/scale degree come up. I made it this way so it will work for all instruments. The included chart gives the notes and degrees for major and minor pentatonic scales in the keys of A-G. I've posted a couple of Penta Muse dice sets for sale here