In reply to Lukem6:
Somewhere on the Beastmaker website there's a training plan for building finger strength. You'd start with assisted hangs (toes on a chair/foothold or more controlled, in a bungee or counterbalanced cord.)
I'm not trying to be dismissive of training finger strength by saying just climb but if your goal is to get back to where you were strengthwise and you got there by climbing it does seem to be the obvious (and far more enjoyable) option. It's also the option that will improve your climbing quickest.
Those rice exercises look horrendous but I guess it works. Enjoy and let us know how it goes
jk