One thing I picked up from my dad was that rather than have one or two general tool boxes it's better to have multiple specific ones if you can, so in an emergency you can go and just grab the bag for the emergency and potentially if needed something like your drill.
For example we have a "general DIY" tote that has a handful of common screwdrivers, a set of screwdriver, a set of common drill bits, a couple of adjustable spanners, mini level etc in it, we then have specific one for electrical and another for plumbing that contain the most common tools for them and a small number of spares, we then have a couple of pull along tool boxes that hold the bulky spares for plumbing and electrical stuff*.
A little tip, if you ever intend to do plumbing work, as well as the obvious tools get some open ring spanners, they're like the love child of a normal spanner and a closed ring one, you sort of get them onto the nut by placing the opening over the pipe then slide it over the nut and it grips partially behind the nut, so you get a better grip than a normal open spanner you normally get them to fit the 15mm and 22mm pipe fittings and they are a godsend when you can only turn the nut 1/8th or less at a go.
All the "quick grab" totes have pencils/markers/mini levels etc in them so there is a fair bit of duplication but it means you're not looking for where your measures/levels etc are as they're in every box/tote. The idea is no one bag/tote weighs much (apart from the plumbing one, as that's got so many big spanners and specific metal tools), but has most of the stuff you'll need for that type of job.
The downside is it all takes space, and costs money, but the upside is you're not spending a lot of time finding the tools when you need them "now" and there are times when the duplicates are extremely handy (my dad is a great believer in buying at least two of any spanners for example**).
We also have a couple of metal "garage" tool chests with drawers where things like spare and unusual sockets and spanners live (you can get rubbery type mats to help hold them from moving), and a more common/bulky tools like saws are on pegs or magnetic rails on the wall (magnetic rails are ideal for things like screwdrivers, set squares and comically long SDS bits).
We do have rather a lot of duplication in terms of tools, and a lot of very rarely used tools, for storage for them we have s
ome of these in grey (I think that was the only colour at the time) for a lot of them, which are very handy for storing things that you need a lot of variety of but are small/light, so for example one drawer that's got various marking and related items (pens/pencils, erasers, sharpeners etc), another that has measuring & mini levels, and to hold things like small sets of router bits and so, and another that has things like a variety of disposable knives/spare blade packs, or spare sanding sheets and pads.
I say all this and i'm very aware we've got a lot of tools in our garage that are extremely rarely used, and some that were bought because we needed them at one point but didn't know, so when we saw it at a good price we picked them up. Things like olive cutters and pullers for plumbing - you don't realise how much you need them until you've spent 45 minutes or more trying to cut off an old olive in a space where you can only move the hacksaw blade (with no handle) an inch at a time
My dad's been buying these odd tools for over 60 years and it's caused some amusement with neighbours when they've had an issue that's stumped them and my dad used to go "give me a few minutes, I've got a (very specific) tool for that, I needed it to fix my old combination bike" or similar.
*We tend to buy spares/multipacks of common stuff, so the general plumbing bag will have maybe one or two of most fittings and some short bits of pipe as well as the tools, but the big ones might hold bags/packs of say 10 fittings, or larger fittings that aren't needed as often.
**And having a wide variety of spanners for the same size, for example the obvious open and closed ones, offset ones, flat ones, ones that have ratchets built in, ones that can have the end turned up to 90 degrees either way so when you can only get the spanner on at an angle normally you can get the head onto the nut/bolt properly with the handle at an angle.
