This is an alternative to the hard cases and allows you to carry it onboard as hand carry luggage. And of course, it cost only a fraction of the hard case's price
To fit these stuff in the stealth reporter 400
Ikelite G9 case, single arm fits nicely
Inon Z240 strobe fits pretty well
And there are spaces for another strobe and camera in the middle. But I'm catering the spare compartment for my wet lenses