A Mundane tool that is so common it's silly. But in the right hands it will fly willy-nilly.

Usually seen in parks Popular with kids In verb form, it just moves like a pendulum

First word: big eyed, grey and green. With the long key in between. Last word: cut and glue together, make a paper stream.

I flip to top heavy to start My innards flowing free A single metric do I mark Then sit still silently

The rapper that likes big butts and cannot lie would really appreciate this kitchen device.