Answer:
I tell people to be careful when handling boxes.
Lovely and round, I shine with pale light, Grown in the darkness, a ladyβs delight.
No matter how much rain gets on me, I won't get any wetter. What am I?
I jump when I walk and sit when I stand.
I am the second L in LOL.
I am rarely touched but often held. If you are smart you'll use me well. What am I?