Brain Teasers

What has keys but can’t open locks?

What comes once in a minute, twice in a moment, but never in a thousand years?

What is always in front of you but can’t be seen?

What has a head, a tail, is brown, and has no legs?

What can travel around the world while staying in a corner?

I can be cracked, made, told, and played. What am I?

I speak without a mouth and hear without ears. I have no body, but I come alive with the wind. What am I?

I have branches, but no fruit, trunk, or leaves. What am I?

I’m light as a feather, yet the strongest man can’t hold me for much more than a minute. What am I?

The more of this there is, the less you see. What is it?