I have long sought such tools to help my 3 year old daughter to master motor skills, including the gesture of "clip", essential for good hold a pen or scissors. It is very difficult to find varied and original clips for various motor skills exercises montessori type. She immediately loved the balls chisel, she does not like the scissors had a great time with, plus it has small holes in the ball, so it is even fun to catch things that floating in a bowl or in the bath. The little yellow ball clip is easy to use for little hands and does not require much force. We have not yet had time to test the rest, I do not regret this purchase!