PC: Need a heavy duty case, and water cooled so fans don't blow metal particulate matter into the PC. This is a real problem for gunsmiths/metal workers. Only fans blowing out at the top of the case away from components. Similar product:
You need an UPS as well for power loss, so you don't lose your computer. (Amazon.com search for UPS).
Self powered emergency lights if you loser power at night. Probably just one double bulb.