I've bought a number of different small screwdriver sets over the years for working on small repairs and desktop computer builds, and none of them have ever come with a decent case. I figured I'd fix that so I stop losing the little bits!
All the cases I've gotten have had issues—terribly cheaply made, the bits keep falling out, not enough room for ALL the bits I've collected... and they were clearly designed as a point-of-sale display bit more than an actual useful case. I set out to fix that with this 3-part case.
It uses the extension bar as a hinge to hold the "bottom" half together, and is printed with a tight enough tolerance to be a friction fit so it'll stay closed fairly well on it's own, keeping your loose bits from ending up everywhere. Then the top half has space for two sets of the bits that come in the little labeled row-holders, and has two tabs with detents that make it engage the bottom half and hold everything together rather nicely!
Hope this is useful for anyone else who has a little screwdriver set like this. I tried to leave enough room in the barrel section for the body of the screwdriver that it'd fit other brands/makes, but feel free to modify it to fit your own screwdriver's dimensions.