Have you had a look round the local shops?
I used a cheap tackle box to store the FAK items at work, kinda like this:
For my personal use i have had a "Pocket" kit from "Lifesystems" for a few years and have been impressed by how well it stood up to abuse, so last year i ordered the "World Traveller" kit for the car.
Obviously i add or remove stuff as i see fit, but both are very good kits, with quality contents in very tough bags.
They also do empty cases if you don't fancy the toolbox/fishing box route.