Dd2.5 was enjoying my ds' leapster, attempting the pen, around 18mos-2 years, but did need help getting the pen to work on the chicken color and shape matching. We have since misplaced the darn thing...
She is ok with crayon and pencil now, but so far draws only eggs, circles, attempts faces with eyes, mouth.
Although she is clearly advanced with her vocab. and speech, I figure her drawing is probably just a little early, if at all.
She is beginning to express that such and such drawing is an alligator or whatever, but it's pretty hard to see
I might have skewed perspective on that because ds was really early with drawing.
I had read that siblings tend to be within 10 iq points of each other.
So look out. (Can't remember exactly where I read that...)