Good morning, Slax !
I am usually quite an unorganised scatterbrain. On our wee boat, though, I use these for storage of tools and small spares:
(Stanley FatMax 1-97-517 and -518)
They come in different sizes, clip together to stack up and are even waterproof. Liked them so much that the kids are using the cheaper "Stanley Sortmaster" version now for their Lego Technic bits at home.
PS- Not assosciated with Stanley or any tool shop at all