I'll assume you mean spray painting, and that you mean canned spray paint, not paint in hand-spray bottles. You can spray paint on most surfaces, from primed board to canvas, rocks, dirt, your TV -most anything. If the surface isn't primed, and you want the painting to last, bring painter's primer. If it doesn't matter how long it lasts, you don't need the primer. Beyond that, you may need rags, gloves (highly recommended,) brushes, sticks, tools of any sort you can imagine making marks with, paint thinner, jars, an easel (if needed,) smock or painting clothes, at least for starters.
