Most 9 y.o.'s can manage a lot. By that age, my kids tried:
- knitting
- sewing, toymaking
- scrapbooking and journalling
- animation, claymation
- photography and video filming
- soap making
- paint and drawing
The Klutz kits with books seem to be pretty popular, as well as Alex kits. However, I've found that my crafty kids prefer supplies to boxed kits. DD in particular gets lots of kits as gifts. In recent years, she's received sewing, knitting, and soap making kits among others.
They don't seem to hold her attention in the same way as a project she's conceived and carries out herself. From time to time, I'll just take her to the store and load up on fresh supplies. A lot of the supplies she uses are recycled or inexpensive which is great too.
Some crafts she's enjoyed:
- making stuffed toys from unmatched socks and scraps of felt and fabrics and buttons
- stenciling t-shirts (DS likes to download pictures and cut his own stencil and then uses fabric paint for the stenciling)
- tie dye t-shirts (there are lots of kits for this, actually, but they pretty limited in the colours offered)
- scrapbooking (she often gives a photo/scrapbook as a gift for a friends' birthdays)
At 9, DD also loved watercolour painting and she did a few years of lessons around that age.
The Crafty Crow is a great site for ideas.