When I think of an Office Bug-in Kit I gotta ask, "Why?". Here, I'd be bugging in because a major earthquake just shutdown SOCAL; the power is off and probably water too. In Canada I'm thinking major winter snowstorm and an office can get cold enough to require camping gear inside. That said, good kit.

You may want to keep some of this in your car so it's always nearby. If whatever hits while at work the car kit supplements your office kit. OTOH, it's also with you on the road. Add more food and a camp stove.