Why do I keep buying extension cords I already own?

Because the moment you reach for one is never spent thinking about the box of them in the garage — it's spent standing next to an outlet that is three feet too far from the thing you're trying to plug in. The problem in front of you is distance, not inventory, so the solution that comes to mind is "get a cord," not "check what I have," even when what you have would have solved it.

A cord solves today's reach problem, not the garage's inventory

You're setting up string lights for one evening, running a pressure washer to the far side of the yard, or plugging a space heater into the one outlet that happens to be nowhere near the desk. The question in your head is "will this reach," not "how many of these do I already own." Nothing about that moment resembles opening a bin and counting — it resembles solving a specific, physical, right-now problem with whichever cord is fastest to acquire, and a hardware store shelf is almost always faster to reach than a box at the back of the garage.

The three ways it actually happens

The old one is "somewhere," which is functionally the same as not having it. You know you own extension cords. You do not know which drawer, which shelf, which moving box, or which one is coiled behind the workbench under a tarp. When the honest answer to "do I have one" is "probably, somewhere," buying a new one stops feeling like duplication and starts feeling like the only reliable option, because a cord you cannot locate in the next two minutes is a cord that is not solving today's problem.

Every job asks for a slightly different one, so a new purchase always feels justified. The cord for the string lights is thin and short. The one for the pressure washer needs to be heavy-gauge and long. The one for the workshop needs three sockets on the end. Each of these reads as a legitimate, specific need rather than "another cord," so nobody stops to notice that the garage now holds six of them, most bought for a single job that finished years ago.

They are visually interchangeable, so a pile of them never reads as a pile of anything countable. A coiled orange or black cord looks almost identical to every other coiled cord until you actually pick it up and check the gauge, the length, and whether it's rated for outdoor use. A hook holding four cords looks, at a glance, like "the cords" — one category — not four distinct objects, any one of which might already do the job you're about to buy a fifth one for.

Why "I'd notice a hook full of them" doesn't hold up

A tangle of extension cords reads as a single lump, not as individually countable objects, in exactly the way a rack of jackets does not. You'd notice a sixth jacket instantly, because a jacket needs a hanger and a decision about where it goes. A sixth extension cord just joins a coil that already looked, from across the garage, like "some cords," and the length or rating that would actually tell them apart is invisible until you untangle and measure — which is precisely the ten minutes nobody has while standing in a checkout line.

What actually helps, without cataloguing every cord in the garage

You don't need to log the exact gauge and length of every cord you own. What closes the gap is a rough note of what you've already got and roughly how long each one is — a short one for indoor use, a long heavy-duty one for the yard, maybe a spare — so the next time you're standing in an aisle deciding between the 25-foot and the 50-foot, you're comparing against something instead of against nothing. Knowing you already own a 50-foot outdoor-rated cord is often enough to turn "I'd better grab one just in case" into "I've already got that covered."

The other half is simply keeping the ones you use most somewhere findable — a hook by the garage door, not buried under three other boxes — so that "somewhere" stops being the honest answer to "do I have one." A cord you cannot find in under a minute isn't preventing the next purchase; it's just adding to the pile the new one will eventually join.

Where a short list beats a better memory

This is one of the cases where looking something up matters more than trying to recall it, because the problem was never wanting a longer cord — it was that nothing tells you, standing in a hardware store aisle, what's already coiled on a hook at home. Kept lets you keep that kind of list without turning it into a project: say roughly what you've got out loud and it becomes a structured entry, or photograph the hook and let recognition draft it for you to confirm. Then, in the aisle, the check-before-you-shop screen answers the one question that actually matters here — do I already own a cord long enough for this — so the one you bring home is one you actually needed, not one that joins the tangle behind the workbench.