According to some hams, a well-stocked junk box is a requirement for anyone who likes to build, repair, or tinker with radio equipment and electronic gear. Keeping an ample supply of spare electronic components provides the ham with parts to build a variety of electronic projects, as well as "spares" of components needed for repairs.
This passage emphasizes the importance of having a well-stocked junk box for amateur radio operators who enjoy building, repairing, or tinkering with their equipment. It highlights that these boxes are essential for creating new devices and fixing existing ones.