I once stored an original A G Russell Sting in the bottom of a Billingham camera bag, along with several other sharps, just for safe storage, I didn't use the bag day to day and it sat atop a wardrobe.
AG Russell Sting
Billingham Camera Bag
Several years later (and post 9-11), living at a different address and suddenly finding myself having to jump on a flight from Edinburgh to London at short notice, I grabbed the now 'empty' Billingham bag, shoved my laptop and washbag into it and caught my flight.
Later that evening, sitting in my hotel room trying to shove various recently purchased cables and bits 'n' bobs into the camera bag I found the Sting sitting beneath the base padding, it had passed though the security x-ray machine without anyone noticing, lucky for me.
Before catching my return flight the next day I popped into a corner shop and purchased a couple of padded envelopes to post it home.