Riddles

1234
Across
  1. 3. The person who makes me doesn’t need me. The person who buys me doesn’t use me. The person who uses me doesn’t know it. What am I?
  2. 4. I begin with “e,” end with “e,” and contain only one letter. What am I?
Down
  1. 1. I am taken from a mine and shut inside a wooden case, from which I am never released. What am I?
  2. 2. I can be cracked, made, told, and played. What am I?