The wanderer's tool, with a sturdy build. Two paths to choose, only one shall be real

A word that can mean 'shut up' Or an undersea creature In the latter, it's considered a delicacy, And it may contain a luscious pearl

Born from fire, pale and gray, I linger when the flames decay. Yet legends tell of phoenixes reborn, emerging from my dusty form.

I'm often found in a pack, but I'm not a wolf. I have a sticky situation, but no real strife. I leave my mark wherever I land, a colorful, adhesive life.

Buy it, use it, break it, fix it, trash it, change it, mail... remake it. Do it again, again and again. You are no fool because you are not expecting a different result. You are participating in the procedure of...?