- a network card you know works
- preferably a laptop, your own
- two straight twisted pair (CAT5) cables
- one crossed cable
- one coaxial cable thin ethernet
- two terminators
- one T-divider
- one cable tester
- one serial/console cable
- several M/F and 9/25 pin adapters
- one knife
- several small screwdrivers
- one cable connector kit
- one punch tool
- one RJ45 extension bit
- clear understanding of your networks:
- physical structure
- logical structure
traceroute, ping, nmap and other software tools
keys to the premises, even the places people never go to
pen and paper
mobile phone
a friend back in the office
You did bring your laptop's power cord or adaptor, didn't you?