For small sample vials, 1-5ml, you could try an ammunition case. These provide great vertical storage, and if you get a taller one for something like .308 Winchester you can close the lid and keep things secured for travels/storage.

Something like this would be really high-end protection:

https://www.amazon.com/Evergreen-Round-Bullet-Locking-Storage/dp/B094WCGKW7/ref=sr_1_35_sspa