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: What is only a small box but can weigh over a hundred pounds?

Question: What asks but never answers?

Question: What cannot be seen or felt, but can only be broken by voice?