Question: Stars, scores and springs have them. Fingers, and backs have them. Keys, switches and cups have them. Leaders and mothers have them.
Answer: Boards -- Starboard Scoreboard Springboard Fingerboard Backboard Keyboard Switchboard Cupboard Leaderboard Motherboard
Question: My thickness is no more than a few centimeters, yet my depth can span to infinity. Although mundane, I intimidate most animals. When in my presence, you will inevitably follow me. What am I?
Answer: I'm a mirror.