hi, what is the must have item/items in your kit?

I'm planing on expanding my kit and would like some ideas of what other people like.

mine is my 'derma concealer palette', my real techniques buffing brush, and my zuca pro artist bag.

Lorac pro palette.

My kit is still being built up to include all those awesome must have staples everyone recommends. I can tell you though that the ones I have acquired will always be present in my kit.

Kryolan dermacolor concealers
Ben Nye fireworks wheel
Ben Nye neutral set powder (all their powders, but especially neutral set)
Heated eyelash curler

my rcma palette and derma color concealer will always be in my kit. u cant move on to the other stuff if the skin isnt perfect.

along with a couple shades of armani foundation, sensual skin enhancer and my graftobian powder foundation palette. im also big into bobbi brown right now. the concealers, natural finish foundation, glosses, eyebrow and lip pencils, blush colors, lipsticks.