As it turns out even very simple adaptation of the most basic principles of contact improv gleaned from observation and a few conversations had an immediate effect, the kids get it. Not only do they get it, it adapts almost flawlessly. Students seem to intuitively learn to be sensitive to each others proximity and without lengthy explanations beyond making sure they understand the concept of a conversation, talking; with their hands, they begin some very aiki movements. The primary differences between the two seem to hinge on Aikido being tuned not only for combat but efficiency. Aikido can be big and is often pretty but to many Aikidoka, that gets old in a hurry. ...anyway, yeah, I'm successfully teaching Aikido through modern dance.
There are numerous examples of contact improv with excellent quality video like this one from Youtube.
Of similar interest may be an illustrative, if somewhat controversial, Aikido video from a self-described "aggressive" Aikido school in Serbia. (Turn the sound down for this one.)
Though, this is really more the idea...