This is what you should carry in a tools kit

TOOLS:
BASIC	MAIN USE
5/64 Allen Key	Claw fingers, claw cap for cord changing
Small flathead screwdriver	Claw wires connection box
Standard phillips screwdriver (magnetic)	PCB replace, claw cap, power supply replace - most used tool
Large adjustable spanner	Locks
Pliers	Claw cap crimping
Torch	Reading meters
ADVANCED
Soldering iron/solder/heatshrink	Repairing loom
Multitester	Finding broken wires that arent visible, testing power from power supply
Bit set	Top corner plasticremove for LED light
Socket screwdriver with bendy extension	5/16 for joystick undoing nuts on underside