For me, it was not a particular vision, but a series of choices made over time as space and materials required. For the most part, I’ve tried to organize my materials into groups of similar materials in one general area, with the stuff I use most (hooks, flash, thread, peacock herl, marabou, chenille, tools) on or near my tying table.
In other cases, if I have a favorite fly that I seem to tie often (e.g., Dave’s Fox Squirrel Hair Nymph), I’ll throw all those materials in a big zip lock bag and label it.
I don’t do tying demonstrations or travel a lot with my tying stuff anymore, so I don’t need to keep a tying bag packed, but that’s another option if you do.