[*]This is the "bag of hammers" I use for training (I'm still working with the little ones on top, since #1 above tends to be a problem for me), and of course, for fixing things around the house:
that's not a proper bag of hammers! those are just ball peen hammers! where's the claw hammer where you need the claw piece to pull some teeth. and the rubber mallet for the knee caps. the sledge hammer for big job. the geologist hammer for old folks. of course the jack hammer for the crowd. of course you need some tune for the hammering, like this http://www.youtube.com/watch?v=otCpCn0l4Wo
. you have to unify mind, body, and spirit for the right sort of aiki-hammering.
*blaming Budd for making me going sideway on the topic*