Answer:
I can be used to type and point you see. But don't forget, you can count on me. What am I?
I always run but never walk, I sometimes sing but cannot talk, No head on which a hat to place, You always look me in the face.
I know a word of letters three. Add two, and fewer there will be!
Different lights do make me strange, thus into different sizes I will change.
What is it that you must give before you can keep it.
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.