I just had a friend over for coffee this morning and we got to talking about piano (of course) (he plays piano too), but then somehow started talking about basketball and he mentioned that he regularly jams his fingers when playing basketball. This sounds horrible to me but he said that he doesn't really break his fingers, but it does hurt. So he got hold of a grip thingy (not sure what you call it - maybe a grip builder?) and it's the type where you can press down fingers individually and also press down on the hand in a way that also works the wrist. He said that many guys in his office have some kind of grip-builder on their desks which they use to strengthen their hands for sports. Some of them are simply the kind that look like a large V and you just squeeze it. But the kind that my friend described - doesn't it sound perfect for pianists? Have any of you used grip-builders (also please tell me what they're really called). I'm thinking that it may be just what I need, especially to help me have stronger fingers for trills.