I think this is a pretty interesting little exercise that I recently learned and it sounds pretty cool too. All you do is practice your minor 11's like so.
Cminor 11: Left hand you play C G Bb (one note at a time going up the keyboard)
Followed by a D Eb F Bb in your right hand (one note at a time going up and then one note at a time going back down)
So you will play going up C-G-Bb-D-Eb-F-Bb-(back down)-F-Eb-D-Bb-G-C
And you can do that over and over than switch it up to F then Bb, you know the cirle of fourths thing, it is pretty sweet, and it helps you get down those minor 11.
Hope someone will enjoy this,
God BLess