To pass the time at work I've obtained a high bounce ball to play around with. One of the things I've been working on particularly is trying to do the first portion of hanasu one bounce at a time. It definitely shortens up your steps. I occasionally get some evasion practice in when it's really quiet. Throw the ball against the nearest concrete wall and you get an instant attacker to sidestep! Needless to say i have to carefully pick my moments with this one but it's still something to do.
Anyone know of any other coordination or aikido-like things one can do with a bouncing ball?