Tear Aid Container

I’m working on designing a custom built 3D printed container to store Tear Aid in a repair kit. Any input or suggestions about size or anything else?

What a cool machine. I would say the container should be sized similarly to the ones used currently.

That looks great and the knurling will be good for cold wet fingers. Would it be a good idea to put a small lip on the inside of the lid to help keep the contents dry? I am thinking like a nalgene bottle.