I'm 54 but I don't think I'm "old" most days....
I started quilting in my late twentys but when I was 10 I was taking knitting lessons with my mother and I would sit on the front porch in a lawn rocker practicing UNTIL our neighbor called me "granny" I put the needles down and I still don't know how to knit.
I have a friend who started quilting when she was 7 or 8 and still quilts with her mother....
Most fiber arts are "old" entertainment but I know children like learning traditional art forms...quilting is art.