As I often say, a box is a box unless it's a puzzle... but then that's my twisted mind.
I say that as I've many many similar for my tools, but always had issues with lid closure. Like you (if you hate hinges), I hate hinges on these type of small boxes, but though it may be obvious to most, I've never considered magnets this way and I love the idea. Doubt if I'll ever buy another hand tool so I'll probably never have the need for another like box, but I really appreciate the way you've used those magnets.
BTW: What size batteries do those drivers take?
If your first cut is too short... Take the second cut from the longer end... LBD