Good 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: Matt's teacher asked him, "What is 3+3?" Matt answered, "8," Matt is correct. How is this possible?

Question: I am full of light but left in the dark. I have a temper that pushes my single sibling. I have many friends very far away and I disappear in the light when it is my sibling's turn to push me back. What am I?

Question: In the books of a famous writter, How many letter in Those Books?

Question: I come in varieties of color and am found almost year round. My house is tall and my only fear is the cold. What am I?