Modular storage system with storage box connectivity and internal storage and lid features

A storage box comprises:

• a lid for covering a bottom portion and defining an inner volume;
• wherein the lid comprises a plurality of ribs are formed on an inner surface of the lid that faces the inner volume of the storage box when the lid is closed against the bottom portion of the storage box, and a plurality of holes formed at one or more intersections of the ribs that are configured to receive a fastener;
• the storage box further comprising an internal organizing system configured to organize stored items within the inner volume;
• wherein the internal organizing system comprises a receptacle having a bottom surface and side walls for defining an interior storage space therein and an opening at the top of the receptacle, and
• wherein the ribs are formed using a grid pattern comprising intersecting ribs and some of the intersecting ribs are configured to abut the receptacle and close the opening when the lid is closed to prevent contents in the receptacle from migrating out of the receptacle;
• and
• the internal organizing system comprises features for preventing movement of the receptacle within the box and chosen from protrusions arranged at respective locations on a bottom interior surface of the box to coincide with placement of the receptacle in the box and at least partially contact a wall of the receptacle,
• a tray that can be provided in the bottom portion of the box and that at least one protrusion in a surface thereof that cooperates with a recess formed in the bottom surface of the receptacle, at least one rib on an interior side wall of the bottom portion of the box that contacts a receptacle, and a contoured surface on the bottom of the receptacle that cooperates with a complementary contoured surface on the interior wall of the bottom portion of the box that contacts a receptacle.