Most of the materials to make a camera can be found in the household if the goal is to make a primitive camera. More technically-advanced camera builds will need special equipment and special techniques. Some builds will require advanced techniques and knowledge bases in electronics, optics and machining of metal, plastic, glass and other materials.
Books that are helpful in the building and modification of cameras and photographic processes.
Experimental Photography: A Handbook of Techniques, (Various Authors) Thames and Hudson ISBN-13: 978-0500544372 ISBN-10: 0500544379