As the collection of "stuff" has grown over the years, the methods of organization have evolved. Open shelves with piles of junk quickly failed for the obvious reasons—it is hard to keep things of odd shapes and sizes piled on the shelves and everything is exposed to all of the dust and mess in the shop. After a certain weight threshold, shelves seem to collapse. Later, I used coffee cans and surplus wooden bins (some of which I still keep as mementos from the venerable and sadly expired Fertik's electronics surplus store in Philadelphia). The coffee cans and boxes first lived on shelves, and later migrated into a mix of shelving and salvaged filing cabinets. This was better because things were better compartmentalized, labeled, and protected, but still had its shortcomings. One major issue was the amount of effort involved in re-allocating storage. If the pipe fittings drawer became over crowded for example, I would logically try to annex the next drawer in the filing cabinet. Typically, however, that drawer would already be filled, necessitating further re-organization. While such operations did give me a chance to become re-acquainted with our junk and to periodically purge the collection, for the most part they just burned valuable time.