Nuts and Bolts
Materials Needed:
- nuts and bolts in variety of sizes (3" long x 1/4" to 1/2" diameter seem to work best) 
Directions:
- Put one hand behind your back 
- with the other hand, hold the bolt with pinky and ring fingers 
- use thumb, pointer, and middle finger to screw the nut down from the top of the bolt 
Goal:
- rotation 
- in-hand manipulation 
- separation of the two sides of the hand 
Modifications:
- arms placed on table gives more stability, making the task easier 
- arms hanging in space gives less stability, making the task harder