Some may believe that the messy days of art projects should be left behind after elementary school.  May I suggest that you pursue art still.  There is wonderful curriculum out there to help teach classical art.  For example:  How Great Thou ART by Barry Stebbing gives wonderful instruction on colour and technique for all ages.  You can find a wonderful FREE art resource newsletter to subscribe to at his site: http://www.howgreatthouart.com/news1.htm as well as samples of other homeschooled students work to inspire your child.

With the awesome resources available on the net, peruse some sites for FREE ideas on high school age appropriate projects - all instructions included.  Turn off the TV and the gaming systems and get creative!  Many of the ideas can be used in conjunction with other subject area studies.  Please, please, do not ignore offering creative outlets for your children at any age.  The stirring of imagination, the brain connections made and time spent is all reason enough to explore this area.  Here are some high school specific sites to get you started:

http://www.princetonol.com/groups/iad/lessons/high/highlessons.html

http://www.lessonplanspage.com/ArtJH.htm

Rally a few fellow homeschoolers or bring your support group onside and have a Gallery Evening when your students can exhibit their creations - perhaps with dessert and punch.  Students are apt to put more energy into projects for display or gift giving.  So, a timeline may help.  Perhaps you could arrange a display day once or twice a year or plan to give as gifts to family this Christmas.

Happy creating!