A screw is only a useful spare if you can tell what it fits. Otherwise it joins the drawer of almost-right objects: a bracket from an old shelf, a cable for a device that has gone, four matching feet from something nobody remembers. Start sorting by purpose before buying more containers.
Empty a manageable part of the collection onto a clear surface. Keep small items contained, particularly where children or animals could reach them. Put unfamiliar objects in a temporary group without trying them in equipment. A similar shape does not establish that a fitting or electrical accessory is suitable.
Identify the object it came from
Look for a manual, model label or photograph that connects the part to an item you still own. Write the ordinary name first: “bedroom bookcase, lower shelf supports.” A manufacturer code can follow, but a code alone may be meaningless when you return to the box next year. Include which room contains the furniture if that helps.
Bag related hardware together. Add a picture of the assembled object or a reference to the folder where that picture lives. Keep a dismantled item’s fittings with that item when practical. For a part that must remain separate, use the same short identifier on both containers so the relationship survives a cupboard reorganization.
Record what you actually know. “Found in kitchen drawer, purpose unknown” is more useful than an invented identification. Give uncertain items a review date and limit the space they can occupy. You can investigate a few at a time without allowing the entire drawer to become a permanent research project.
Separate usable spares from things awaiting repair
A broken handle is evidence of what needs replacing, not necessarily a spare. Keep repair samples in a different container with the related task written on the label. If you will ask a supplier about a replacement, record measurements and identifying information, and follow the supplier’s guidance rather than guessing from appearance.
Put original tools and accessories with their instructions where possible. Some flat-pack furniture arrives with an extra fitting; mark it as an extra rather than leaving yourself to wonder whether the assembly is incomplete. Avoid storing a sharp tool loose among small pieces that someone will search by hand.
For cables and adapters, retain readable labels and keep the device name with the accessory. Do not rely on connector shape alone when deciding compatibility. Uncertain electrical items belong in the identify-or-replace group, not the ready-to-use box. A tidy container should not give an unverified part an appearance of approval.
Let the container set a limit
Choose compartments large enough for the groups you actually have. One compartment per project may work better than sorting every screw by length. The useful test is retrieval: can you find the shelf fittings without disturbing all the other bags? Put frequently used household accessories near the front and rarely needed originals behind them.
When an object leaves the house, check the spare-parts collection. Its accessories may need to go with it. Remove labels and records for things you no longer own after deciding whether any documentation is still useful. This small habit prevents the box from growing every time another appliance or piece of furniture passes through the home.
Keep an index only if the collection is large enough to need one. A photograph of the open box with readable labels may be sufficient. Revisit the unknown group during the next repair or seasonal sort, and give each item a clear destination. The goal is a cupboard that answers a question, not a museum of every fitting that has ever arrived.