Delve into the playing of Latin and Afro-Cuban drummers and you’ll find a huge resource of material for improving your co-ordination and polyrhythms. I regularly use this vocabulary in Jazz but, even if you never find a use for this material on a gig, it will still prove amazingly useful as a practice tool. These rhythms are simply the best way to develop your multi-limb coordination.
Below is a transcription from an Antonio Sanchez LP YouTube video. I decided to transcribe it after hearing the Afro-Cuban style groove mid-way through (from around 4:09). It has an infectious lilt that I thought would sound great as an Elvin Jones style outro vamp groove. The B section is a demostration of using the 2/3 Rhumba Clave on a left-foot cowbell. This will certainly test your co-ordination and, although you may never use it on a gig, will certainly help to develop your 4 limb independence.