@Sacto Mitch wrote: "one tool that, while crude, was indispensable - a long spark plug wrench"
Hot Rod Jimmy has a "Hazet" tool kit in his original '58 Speedster. He found the tools piece meal over the years and his brother stitched up the roll-up tool caddie and it looks every much the part of a real Hazet for one helluva lot less. He had it out at a recent Cars and Coffee and was grumping that you could loosen the spark plug with the long plug tool, but that the plug often fell off onto the heat shields and hid for you to find. I convinced him to come home with me and I could magnetize the thing for him. He was skeptical until I zapped it and now he wants a mag/demagger for his shop, too.