I am primarily made of calcium. I protect and act as camouflage. I can be found as a filler in most household spices. What am I?

Explanation:

Bones?

Bones are primarily made of calcium. Also, they protect the body, which is pretty much obvious. They also act as camouflage.

The only but I have is, can they be found as a filler in most household?

Asides that, bones pretty much fits in to the answer.

answer; /// the above statement is (true);