Here are a few riddles for you:

1. I speak without a mouth and hear without ears. I have no body, but I come alive with wind. What am I? Answer: An echo.

2. What has keys but can't open locks? Answer: A piano.

3. I am taken from a mine, and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I? Answer: Pencil lead/graphite.

4. I am always hungry, I must always be fed. The finger I touch will soon turn red. What am I? Answer: Fire.

5. I am full of holes but still holds water. What am I? Answer: A sponge.

6. The more you take, the more you leave behind. What am I? Answer: Footsteps.

7. What has a heart that doesn't beat? Answer: A deck of cards.

8. I can be cracked, made, told, and played. What am I? Answer: A joke.

9. I have keys, but no locks. I have space, but no room. You can enter, but can't go outside. What am I? Answer: A keyboard.

10. I am not alive, but I can grow. I don't have lungs, but I need air. What am I? Answer: Fire.