Knowledge I impart, Sometimes solely from the heart, Other times it's from the mind, I'm finished with the bind

Several things can do me, such as thunder, hands, or cheeks Accompanied by whistles, cheers, excited joyful shrieks

Shell of stone with tongue of silk, I hide a secret none can milk. I open only when I choose, Guarding pearls the oceans bruise. Silent at the water’s rim Name what I am, tight-locked and slim.

I can hand wood chunks in a tray Or wait, am I a body spray?

change my first and i'm what you do on your phone, day in and day out change my second and give me a bucket change my third and set the table on me altogether i'll guide you when you're lost.