Jagged scraps of a whole, useless on their own. Only after much reflection is my picture shown.

Why do you have that on your face, dude? It's not five o clock yet.

You think of me as grey and dull, but I can be surprisingly colourful. Often nocturnal, drawn to flame, who am I, this butterfly's cousin with the short name?

I share my name with something in your blood, yet I’m also stacked in a gym and swung on a field. I smooth out wrinkles without fingers, but I can’t move at all without someone guiding me. I live on the periodic table, but I’m just as at home in a closet before work. What am I?

What is small, often sweet, and helps websites remember you?