FilmmakersToolKit00Filmmaking is about creating something out of nothing, and no matter how prepared you may think you are, problems always arise on set.

So before you get to the set, I'd recommend purchasing the following tools, because I guarantee, they will save your shoot at some point in your career.
Swiss Army Knife
This multipurpose tool, while not strong enough for the rigors of on set production is always handy to have on your belt.  From cutting tape to tightening the screws on a camera tropod plate, Swiss Army knives are a versatile tool.
Leatherman multitool
Similar to a Swiss Army knife, a Leatherman is a more robust multi-tool featuring a knife, screw drivers and plyers.  
Flathead screw driver
Philllips Screw Driver

Allen Wrench Set
Many stands, tripods and overhead frames use allen screws instead of traditional flat or phillips head screws.  Grips especially should always have both an American standard and Metric Allen wrench set.
Needlenose Plyers
These small plyers are perfect for precision work and generally used with servicing camera and electronics.
Utility Knife
Tape Measure
Small Level
Light Meter
Volt Meter
Circuit Tester
First Aid KitFilmmakersToolKit00
Lens Cleaning Fluid and Lens Cloths
Camelhair brush
Compressed Air
Small Flashlight
Miner's Flashlight
Gaffer's Tape
Camera Tape
Paper Tape
Dry Erase Markers
Spare Fuses
Leather Work Gloves
Book of Sample Gels
Dulling Spray
Cube Tap
Gum/Breath Mints
Video Cable Adapters

jason-tomaricJason J. Tomaric is an Emmy-winning director and cinematographer in Los Angeles, and produces the online filmmaking resource,  FilmSkills uses dozens of instructional videos from hundreds of working film industry experts to enhance students’ learning experience.