tholt576
Contributor
There's also a slightly larger quest. These "magna doodles" are made by especially for divers, so they have a few features the kid ones don't have, like a conventional slate on the back for perminant information, more secure attachment points and higher quality construction.
http://www.scuba-accessories.com/catalogpage.php?under=-1&cat=6#Quest_Magnetic_Slate
http://www.scuba-accessories.com/catalogpage.php?under=-1&cat=6#Quest_Magnetic_Slate