Basic tool kit: Ranger craft sheet, scissors, paint brushes, mini blending tool and foams, water sprayer, paint pens like Posca, water container to clean your brushes, baby wipes, paper towels, paper plate or palette paper to use as a palette (or you can just use your craft sheet). You may also want a small notebook and a pen for taking notes.
Your art journal.
A small gel plate, no bigger than 8×10. I like one that is smaller, 5×7 or 4×6.