Just yesterday, I went downtown to get three fan brushes (small, small-medium, medium), a Roman Szmal Aquarius watercolor starter set with 5 full pans (Y, R, B, G and Caput Mortum) (I discover myself going continuously to the primaries for mixing) and a tin box of Hahnemüle postcard-size watercolor paper.
The watercolors and Hahnemüle postcards will prove handy when traveling with the family (when I rarely have a few minutes for a quick sketch).