What am I?

I am a box who holds keys but not locks. With the right combination I may unlock your soul. What am I?

related riddles

I come in centuries, but not in a decade. What am I?

Although I may have eyes I cannot see. I have a round brown face with lots of acne. What am I?

Everybody has some. You can lose some, you can gain some. But you cannot live without it. What am I?