You're welcome. Good choice with Planet Express. Their crew is replaceable but your package is not.

Now that I don't really have an answer for.

I have one of these: (wera kk 62) https://www.amazon.com/05059297001-Bitholding-Screwdriver-Pouch-Pieces/dp/B09PGYVP8K

which has the 89mm bits and the design of the case is fairly simple. Foam sandwiched between nylon(?) pouch with an elastic band sewn in the middle with it stitched giving enough room for each bit. There are flaps at top and bottom so they don't come out. If you knew someone into sewing they might be able to make you something similar.

Past that.. Something like a Ernst Bit Boss if you want them vertical. You might find a drill bit like pouch that worked but I can't imagine it holding anywhere near 100. With that they would likely vary in size too.