I got the boxes at WalMart in the sporting goods department for around $5. I ordered the cotter pins from a commercial supplier, one that had all the correct sizes (Ford used a lot of in-between sizes), made the cover and chart on my computer using Word and Excel, then laminated them. I made up 10 sets, sold some, gave some away, and I think I have a couple left for who knows what.
I liked the boxes so well that I got about a dozen more and use them for all the other fasteners and electrical goodies. Cleaned up my work space really great!