If is necessary or desirable to reduce your oil painting equipment to a minimum, how little could you get by with? Clearly you would need a surface to paint on, a surface to mix your colors on, something to mix them with, plus something to clean things up. So what gets reduced is the number of brushes and the number of colors.
Canvas or other painting surface
Citrus thinner
Linseed oil
Palette
Palette knife
Bristle flat brushes 1 1/4 inches wide, 1 inch wide, 3/4 inches wide and two, 1/2 inch wide.
Sable flat brushes 1/2 inch wide, 1/4 inch wide and two sizes of small rounds
Colors:
A large tube of Titanium White
Smaller tubes of:
Cadmium yellow pale
Cadmium Orange
Cadmium Red
Quinacridone Rose
Dioxazine Violet
French Ultramarine Blue
Cadmium Green