Some nice ideas from the Precision Teaching Wikihub...
Some additional possible materials that are good for working on finger and hand strength.
Pick up and drop dice on a table (or in a bowl for the noise)
Pull magnets off a metal board (or refrigerator or file cabinet) and drop them in a cup.
Put magnets back ON the above board (We have small round magnets that are kind of fun to work with)
Pick up and drop marbles (size can be varied--bit ones are easier at first, little ones are tougher).
Click a counter (we bought counters from BRCO or other supply houses to count early, kind of random writing movements. The students LOVED them and with practice can reach VERY high frequencies while watching the counter move up).
Put nuts on fixed bolts (twist)
Drop washers onto fixed bolts or dowels. (Size matters! All of these things are CHEAP to purchase)
Use a paper punch to make holes in paper (use the scissor type)
Salad and toaster tongs
Physical Therapy devices for hand strength (these can be varied in resistance).
Squeezy balls of all sorts.
"Martian popper" doll (www.amazon.com/Accoutrements-9500-Martian-Popping-Thing/dp/B0006GK86E)
(You may need to decide how far the squeeze has to be on this to be counted. Clickers or counter that makes sound can help on this one)