I go up and down but never move, connecting worlds yet staying in one groove. What am I?

I have a wooden floor but no house, And make a snap that scares the mouse. I offer a meal that’s free of charge, But the price you pay is rather large

Colorful sticks of imagination, melting rainbows in the hands of young artists, leaving vibrant trails on blank landscapes.

I have a head but no eyes. I get beaten but never cry. I have skin but no bones. A pillow deadens my moans. The heart tones...

In the heart of the machine, I spin, a circular dance, teeth interlock, crafting motion's advance. Without me, the giant stands still, a silent tale of iron will.