> My flight to calgary started perfectly, and ended after a half full fountain pen quietly burst in my jacket pocket. not fun.

This isn‘t too uncommon, I have been told.

Years ago, when I worked in aerospace, I had a colleague who always carried his precious fountain pen in a small black box.

When I asked him about it, he told me that the box was only partially to protect his pen but also to protect his bag and the things in it from leaked ink. He said that pressure surges during flights used to cause him a lot of trouble and he looked long and hard until he found a case that was airtight and sturdy enough to prevent leakage. I looked up the case and it was some military grade box.