Over the years I have developed a method for organising stuff, which works for me. I generally think of it as Structured Chaos.
It involves broad categories of stuff grouped together in containers. So, for example, there are plastic tubs for knitting paraphenalia and for long-hand notebooks. Within each tub, though, is complete chaos.
Funnily enough that’s how I write novels.
There are (mental/electronic) containers called Start, Middle & End, into which I put scenes covering major events. I keep adding scenes to the containers, in no particular order, until each container is full. That’s the first draft.
Now, in the physical world, tubs can get so full that I need a contents list or I’d never find anything. At a certain point in each novel I also do this with my writing tubs; creating a list of chapters that helps me see what needs fixing.
I don’t know if it surprises anyone that a writer’s internal life is reflected in the external, but I found it kind of amusing. Partly because I’d been successfully applying Structured Chaos to my writing long before I realised how to do it in my cupboards!