I actually made my own case using a vintage air compression gauge I was given. Removed the plastic cover and the innards and I now have a drill insert case. USA made as well.
As for my drill bits, I recently bought a package with a "compression" holder so the item would not fall out and I removed the top and kept the compression part for my drill bits. This also is USA made as well.
But depending on the amount of bits you own, I would also recommend building a case of your own if want to save money and have quality control as well.
If your lucky, Sears occasionally carries old stock and there is a chance they still sell air compressor gauges. The Phillips screws are typically very common and inside of those compressors are probably easier to remove now and days than 30 years ago with my air compressor gauge.