Snowbird wrote:

EDR wrote in message ...
When my wife's father died out of state, a friend loaned me his
airplane to get my wife to her mother's side. The kids were 4 and 2, it
was the second child's first flight. For the trip home, I gave each of
the kids a grease pencil and they had fun drawing on the rear windows
for and hour and a half.

Gah! Glad it wasn't our plane...

Grease pencils are really wax... it wipes off with a clean cloth.
BTW... do you know how to remove crayon?
Spray WD-40 on the crayon marks (poster paint, markers, etc) you want to
remove. The WD-40 dissolves it.
See Binney & Smith website (www.crayola.com?).