How to inventory tools
A tool almost never gets bought as "another tool." It gets bought as the fix for a stuck hinge, a wobbling shelf, a bolt that will not turn — a specific problem, solved on the day it shows up, usually at whichever store is closest to the job rather than the drawer where the same tool might already be sitting. Nobody sets out to own four tape measures or three of the same screwdriver. They set out to fix four different things on four different days, and every time, buying felt like the fastest way through — not like adding to a pile.
Why a tool collection hides even from the person who owns it
Tools do not get stored by category the way clothes get stored in a closet. They get stored by where the last job happened — a drawer in the kitchen for quick fixes, a toolbox in the garage, a bin in the boot of the car for roadside problems, a case inherited from a parent who kept everything in one place. Because there is no single shelf that holds "all the tools," there is no moment where the whole collection presents itself the way an overflowing wardrobe does. On top of that, a lot of tool purchases are for a job that has, in that exact moment, no visible substitute in the house — a specific socket size, a stud finder, a particular bit — so the purchase feels entirely justified on the day it happens. Whether an identical one is already sitting at the bottom of a bin somewhere is a question nobody asks, because nothing about the moment invites asking it.
The three ways it actually piles up
The same job gets solved twice. A wrench, a drill bit, a specific screwdriver head gets bought for a task, used once, and put down somewhere that is not where the rest of the toolbox lives. Months or years later, a similar task comes up, the first one cannot be found or is not remembered, and a near-identical tool gets bought again — not out of carelessness, but because searching a garage takes longer than a five-minute drive to buy a replacement.
A tool outlives the project it was bought for. Flat-pack furniture, a single home repair, a deck built one summer — each of these justifies buying a specific tool that the job genuinely needed. The project ends, but nobody makes a decision about the tool itself, so it settles wherever it was last used and stays there indefinitely, technically still "yours" but functionally forgotten.
A tool goes out on loan and gets replaced before it comes back. A neighbour borrows the drill, and a second project turns up before it is returned. Asking for it back mid-loan feels like more friction than driving out to buy a cheap replacement, so the replacement gets bought — and now there are two, one of which is not even in the house.
Why "idle" means something different for tools than for most things
Elsewhere in a house, months of not being touched is a fair sign that something has stopped earning its space. Plenty of tools are supposed to sit idle for exactly that long and still be exactly the right thing to own — a car jack, a stud finder, a specific socket bought for one recurring but infrequent job. When the moment comes that needs them, there usually is no real substitute, so idle time here is not a verdict, the same way a fire extinguisher does not need to be used monthly to be worth keeping. What idle time is genuinely useful for is the general-purpose tools that quietly got replaced without a decision — the second drill, the spare tape measure, the screwdriver that stopped being the one actually reached for, months ago, with nobody ever deciding to retire the old one.
What is actually worth tracking
Not every bolt, screw, or offcut in a bin. What is worth a short note is the power tools, by brand and model — because batteries and accessories are usually locked to one platform, and knowing which platform you are already on is what stops a future purchase from bringing home a battery that fits nothing else in the garage. The other thing worth tracking is anything currently out on loan, with a name attached, so "I think Mark still has that" turns into an actual answer instead of a guess made six months later. And when a project ends, a single line about the specialised tool it needed — keep it for a similar job that is likely to come up again, or let it go — is what stops it from settling permanently at the bottom of a bin by default.
When to actually update it
Three moments cover this. Before a trip to the hardware store for a specific job — a wrench, a particular bit, a stepladder — a quick check of what is already somewhere in the garage is what catches the purchase before it happens rather than after, standing in the aisle wondering if this is the second one. When a project wraps up, that is the moment to make an actual decision about the tool it needed, instead of leaving it to settle at the bottom of a bin indefinitely. And the moment a tool goes out the door to a neighbour or a friend, a note of who has it is what turns a vague memory into an actual answer if it has not come back by the time you need it again.
This is close to what Kept is built for: photograph a shelf or a toolbox in one go rather than typing each tool in by hand, use the check-before-you-shop search standing in the hardware store aisle wondering whether the drill bit in your hand already exists somewhere at home, and let idle-days tracking quietly flag the spare drill that stopped being the one you reach for — without touching the car jack that is doing exactly its job by sitting untouched for most of the year.
What it looks like when it works
Not a fully labelled pegboard with every bolt sorted by size. It looks like knowing, before a trip to the hardware store, whether the tool for this specific job is already somewhere in the garage, and getting a drill back from a neighbour without having to reconstruct from memory who borrowed what.