Answer:
The person who makes me doesn't need me. The person who buys me doesn't use me. The person who uses me doesn't know it. What am I?
I will disappear every time you say my name. What am I?
Glittering points that downward thrust. Sparkling spears that never rust. What am I?
Whoever made me doesn't want me. Whoever bought me doesn't need me. Whoever uses me doesn't know me. What am I?
I can run but not walk. Wherever I go, thought follows close behind. What am I?
No matter how little or how much you use me, you change me every month.