Inventory Organization Systems that travel?

When you are traveling to a show across country? How do you like to
pack and organize your inventory?

I just ordered the Rio Grande Travel Storage Organizer (400-423),
but I don’t like the heavy weight and that I’m not sure I can take it
on a plane without it being obvious what it is.

Are there viable sources besides Rio Grande? Ideally, I am looking
for a long-term inventory organization system as well since I am
either traveling to a trade show or carrying work to a gallery.

Looking forward to suggestions!

Carolyn Tillie