How do I prevent my ink from leaking?

Question

I only write in nib and bottle pens--how do I properly cushion my glass inkwells so that they don't break on flights?

(Please don't tell me to write in ballpoint)

Answer 1

It will be helpful if you spread this question on several different popular categories. More people meaning more information. ;)

I never used bottle pens in my life.

Hope this helps.