Coolplay 4 Color Children Water Drawing Mat Board & Magic Pen Doodle Kids Educational Toy Gift 31.5″ x 23.62″ Price: $14.99 (as of 31/12/2019 11:56 PST- Details)

Just add water, fill the pen with water then you can draw on mat.
No ink, no chemicals and no mess. Handwriting will magically disappear, so kids can doodle again and again.
There are 4 different colors on the mat so that kids can use their favorite color areas to reate a great drawing.