A 2x2 grid sheet of four separate glossy 3D emoji-style icons, each centered in its own cell with lots of empty space, on a pure solid black background, no text, no letters, no borders, no grid lines. Top-left: a big bright yellow lightning bolt. Top-right: a park ranger's wide-brim hat. Bottom-left: a human ear with small sound waves. Bottom-right: a sturdy metal car body shell glowing with a blue electric current flowing around its outside. Consistent style, soft studio lighting, high detail, same size icons.
