Here's a cool vintage thread caddy sewing box full of sewing thread. The box itself is clear hard plastic, molded into a clamshell shape. The lid opens to reveal space (on spindles) for 24 spools of sewing thread and a little extra space by the hinge for small sewing notions.
I have included 24 spools of assorted colors of sewing thread, a plastic thimble and some needles.
Measures 8 3/4" wide X 7 1/4" from front to back X 2" tall.