Sit over a peanut ball with your legs either side and your feet flat on the floor, if possible.
Place a small table on one side with a toy on it.
Try reaching across with your left hand to pick up the toy and place it to your left side.
Repeat as many times as instructed.
Then move the table to your left side.
Reach across with your right hand to pick up the toy and place it to your right side.
