You can do the drop test and reliability testing at the same time. Just drop them in some dust, dirt, sand, or whatever you local has to offer.
Maybe with them in your carrier you can roll around in some mud and other various things. To bad you live in Florida though because it would have been more enjoyable in a colder climate.
Oh yeah I almost forgot that most Afghans don't have plumbing and just crap around their perimeter walls which just happens to be a great place to take cover or find concealment. So in order to make this test valid over a broader consumer base you're going to have to roll around in some poop.
But seriously I'm looking forward to the results. I may have to do something similar w/ another piece of equipment.