Watercolor Paper
I prefer Arches Cold Press 140#

Paints - artist grade tube paints
minimum optional
Ultramarine Blue (Grumbacher) or Aureolin Yellow
French Ultramarine (Winsor Newton) Cobalt Blue
Burnt Sienna Rose Madder Genuine
Alizarin Crimson, Winsor Red Winsor Green (WN) or
Winsor Blue (WN) or Thalo Blue (Grum) Thalo Green (Grum)
New Gamboge (WN) , Winsor Yellow Sap Green

Brushes
Sceptre (Winsor Newton), Kolinsky Plus (Liquitex), or Robert Simmons (suggestion)
3/4" or 1" flat watercolor wash brush
#6 or #8 round watercolor brush
old stiff bristle brush
old tooth brush

Support
Board 1" larger than watercolor paper (i.e.gator board, masonite, 1/4" plywood, foam core, or anything that will support the paper)
Palette

Watercolor Palette, butcher tray, or white plastic TV dinner tray

Miscellaneous items
Bag to carry supplies
Two water containers for washing brushes
Paper Towels, Pencil #2B, Eraser, note book to take notes
Masking Fluid (optional)
Small spray bottle
Bulldog clips or masking tape (to hold paper on your board)
Household sponge
Photographs to work from
Other things to bring if you have them:
White or light colored crayons
Small container of salt
Small natural sponge
Watercolor pencils
Saran wrap
Wax paper
Cheese cloth