The False Turkey Tail, Stereum ostrea is probably one of my favorite mushrooms. It's not particularly interesting or unusual. It's certainly not rare. It's more like a "comfort" fungus maybe. It's always around, hard at work, quietly decomposing lignin. It's not showy or grand in any, but to one who has a discerning eye it offers many nuanced patterns, textures, and colors to admire.
Note: this is available in a number of formats at Red Bubble.