Answer:
I always run but never walk often murmur but never talk have a bed but never sleep has a mouth but never eat.
I am a red drum which sound without being touched and grow silent when I am touched.
I'm a precious stone in a pack of cards. What am I?
I am one with eight to spare, lest I lose my one. I'm not a number. What am I?
I mirror your actions.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.