Art Advantage 13-Inch by 17-Inch Artist Sketch Board Ideal Size for Kids.
Strathmore 400-105 400 Series Drawing, Smooth Surface, 11"x14" Wire Bound, 24 Sheets Fits the above recommended board.
Prismacolor Premier Kneaded Rubber Eraser, Large, 1 Pack Kneaded eraser allow erasing the strongest marks while retaining the essential drawing.
Cretacolor Lead Set and Holder This set is a great deal.
Art Alternatives Sandpaper Pencil Pointer, Brown You could use a nail file too.
Sterilite 17214818 Mini Pencil Box Protection for your supplies.