Some people like me, some may not. I can be cold, or I can be hot. Maybe I can smell of Lavender. I am not animate, so I may not wander. I can ease your pain. And still you can gain. What am I?

I’m brown and hairy, but not an animal. I’m filled with water, but I never drink.

By night I wander through your head, by day I lead the path you tread. One fades with dawn, one pushes far, what am I that guides who you are?

I'm green at the start. Halfway through I'm mostly red with dark freckles. By the end, I'm often smiles of green, white, then red.

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