It's surprising at how little this matters.

I came back from a tech event once with a build a robot kit, except I'm a very light packer and the box was huge so I had to take everything out and fit it into a backpack along with everything else I had.

I had a compartment that had an assortment of circuit boards, screws, wires, plastic pieces, etc..

No one even batted an eye and the bag went straight through the carry on x-ray machine. This was in San Jose, California while preparing for a cross country flight. I was surprised too.