Invaluable (Score 4, Informative)

I have to say that one of the most useful things I've gotten my hands on in a long time is an IDE to USB cable. It saves tons of time hooking up drives that aren't able to boot for one reason or another for data extraction. All that slaving to another system and rebooting gets old real fast, but I end up working on quite a few laptops. I'd also reccomend a hard drive duplicator/maintainence station. As far as tools go, everyone has their favorite for one stop shopping, but I prefer the Swiss Army Cybertool. It's way more useful than the model with a USB drive, and has nearly every commonly used PC maintenance tool I need, including a pin for reset buttons. A bit bulky, but I wouldn't be without it in my pocket. I don't know what type of KVM you use (USB or PS2), but I would also reccomend keeping a genuine opposite, read not using adapters, keyboard and mouse handy. Typically, I use PS2, but every now and then I get a system like a Compaq iPaq (the desktop not handheld) that only has USB, and doesn't work well with adapted PS2 devices.