All you need are Quicksilver & Turbogold. You can get both in organiser

cases, very often on a cheap deal.

I started with a trade case, but rarely even use that now.

6x45, 6x80, 6x100 for construction/studs.
4x20, 4x25, 4x30, 4x40 for joinery.
5x60 - odd stuff.

Though I mostly use Spax and Reisser these days.

Also means for fixing I only require 4mm drill/PZ2 bit or 6mm drill/PZ3 bit.