I have a separate set of "Burn" equipment. AKA, if it breaks, it won't break my heart equipment.
It's damn near impossible to keep stuff clean out there, as I'm sure you know. Keeping stuff covered when not in use is always good, as well as not using it in the dust storm, but considering how dusty it's looking to be this year, that's well, probably impossible.
Last year, even though it wasn't very dusty, and I had all my stuff in the dome, it still got pretty tore up.
Sheet to cover when not in use, and those air sprayer bottles to dust stuff off will go a long way.
As far as the laptop, I've had one out there for the last three years, and just made sure to put it in the bag when not in use, and it has survived so far...
(Sorry to be Captain Obvious. hehe)