Sure, 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. 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.

3. I am full of holes, but I can still hold water. What am I? Answer: A sponge.

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 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.

6. I am an odd number. Take away one letter and I become even. What number am I? Answer: Seven.

7. I am a word of letters three. Add two, and fewer there will be. What word am I? Answer: Few.

8. I am a box that holds keys without locks, yet they can unlock your soul. What am I? Answer: Piano.

9. I am not alive, but I can grow; I don’t have lungs, but I need air; I don’t have a mouth, but water kills me. What am I? Answer: Fire.

10. 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.

I hope you enjoy these riddles!