Summary

I use 5ml Cryo Vials as portable fountain pen ink containers, carrying refills/colour swaps with me.

However, refilling from the vial without a syringe can get a little sketchy, as they fall over very easily, so I made a holder/refilling stand for them to secure them when refilling my pens.

These holders fit a 5ml standard cryovial (15mm diameter, about 60mm in length). Scale around as necessary if you're using them for something else.