Light or heavy go to town, Turn to smiles each every frown, Laughter, giggles, thrill, and glee, As one goes up and one goes down

I guard the sea's treasure, a fortress so small, Echoes lull within my spiral hall.

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.

Iridescent splendor, Australia's treasured darling, At the height of your popularity, you were thought of so dear; Royals wanted you Common folk idolized your status Thieves carried you as a charm. And then you tumbled from your plinth, Becoming associated with bad luck, death, and the evil eye. As a few last clues, look to those born in October for something beloved mined Gild these old bones, and honor the dead And reflect on times that have long since fled. Now I remain ever hopeful, that you see now the answer is clearly...?