What Am I Riddles

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: It flies, it walks, it runs on land, It takes, it gives, but without hands, It carries and delights, Falls and frights. Normally a creature of white it is. What is it?

Question: I am there !!! but I was!!!

Question: What is as big as you are and yet does not weigh anything?

Question: What can fall but never stay, something colorless with peoples dislikes?