Da job Bag
rechargeable electric pistol style screwdriver, with 4" 6" 10" extensions
CraftyTire 8 slot 'multiscrewdriver'
something around 300 different variations on bits including the vast majority of the "secure" bits.
1/4" drive ratchet and 40 some sockets, 4" and 6" extenders and a wobble bit.
Serial2USB, 6'. Parallel2USB 5' SerialoverEthernet 5'. 8' ethernet cable with a crossover extender cable.
laptop (Currently HP EliteBook8570w with 1Tb ssd, 32Gb ram -- Yes, F25,kvm and guests)
The 125W powerbrick for same.
Plain grey T-shirt, slightly washed out and ragged jeans @34x34, grey socks.
At one point I also carried a disposable tyvek 'environement' suit (minus the helmet, it was not much larger than 6" square and about 1/4" thick when vacuum packed) I've since lost the source connection I was getting those from at $5 a pop.
I've been accused of being a boyscout by the folks I work with. Especially when I can unscrew those stupid damned offset triangle screws that Sun used for a while on cases. I can wear a suit to work and just pop into a privy to swap outfits if I need.
I have 2 64Gb USB keys with too many partitions and as far as I can, bootable copies of the OS's I support on them. Or at least the *source* to make bootable copies.
Nope, not a grad, but thats 30 some years of IT experiences wrapped up in "What the HELL do I need to take with me today".