Every trade has its tools, and IT support is not different. The tools showed in this post are the bare minimum to deal with the majority of tasks.
Precision screw drivers
A set of precision screw drivers comes handy to repair or replace parts in laptops or phones, mounting servers or switches in racks or even open electrical sockets.
Label printer
A label printer is essential for printing small plastic tags that wont fade away overtime, usually for inventorying laptops, monitors, docking stations, RJ-45 sockets, cables, basically anywhere they stick.
Cable tester
The RJ-45 cable tester is useful to test connections in network cables, between workstation sockets to the patch panels, and even if the socket is connected to an active switch.
Flashlight
The humble flashlight is really useful to check cabling in racks, laptop boards, power supplies, and many other dark corners.
Ethernet to USB adapter
More and more devices don’t have RJ-45 sockets, having this around will help with downloads in Microsoft Surfaces, MacBooks, some laptop models and even tablets, because cabled connections are still faster than Wifi.
SATA to USB adapter
A SATA to USB adapter comes in handy to migrate from old mechanical hard-drives to solid state drives.
Pen drive
A pen drive is essential to have a few applications on-hand, store some scripts maybe even guides. Independent of the industry its always good practice to have them encrypted.
Smartphone
The smartphone is probably the best tool available to any IT technician. Read emails on the go, receive calls, messages, take pictures, make videos and search for solutions anywhere.
Multitool
This a multitool is handy and small enough to be in any pocket.
Multimeter
The humble multi-meter can confirm bad power sockets, computer power supplies, UPSs, short circuits and even measure current.
Guitar Pick
They are awesome for opening tight plastic clip cases.