Minimum 2 body cords - working and tested. Recommend 3.
Minimum 2 mask cords - working and tested. Recommend 3. (only foil and saber)
Salt shaker or salt packets - quick cure for muscle cramps.
Power Bars to your taste. Lots of water, do not rely on Gatorade or other sports drinks for minerals and hydration. Bananas, apples, pears also give energy and help with mineral depletion.
Tool kit is a must. Things happen and not always for the best. Always be ready for a quick in-field repair or a patch. If you have a spare lame, bring it just in case.
For a few days prior to competition, minimize red meat intake and rely primarily on pasta, chicken, and fish. Carbs are a great way to improve the energy levels for competition, as well as they are light on the stomach.
Attitude - bring the most positive and best one with you. Be happy, positive and enjoy the moment!