The Plate Method, developed from the Swedish Plate Model, is very useful for diabetes meal planning.

It is simple to use and very inexpensive.

We often use paper plates for this.  Draw the lines of division on it with a sharpy.  Whala!  A portable, inexpensive, easy-to-understand meal plan that costs the clinic/patient practically nothing.

More information on this method is available here: http://www.platemethod.com/index.html