What is it?

Question: I come in many different colors. I create boundaries to keep things concealed and safe. My best friend is a lock and I am also made of different materials as well. I love to travel: you can find me anywhere. What am I?

Question: What tastes better than it smells?

Question: What goes in the water black and comes out red?

Question: Tear one off and scratch my head. What once was red is black instead. What am I?

Question: What asks but never answers?

Question: I have 6 faces and 21 eyes, but can't see a thing. What am I?