A sketchbook, colored pencils, watercolors, and oil pastels are some good basic supplies.
Take advantage of fabulous weekly coupons:
Hobby Lobby - http://hobbylobby.com/weekly/weekly.cfm
Michaels - http://weeklyad.michaels.com/
Art classes also make special gifts and allow for additional creative experiences. Check out the "Art News" link for a list of local opportunities.
Please let me know if you have any questions!