Aqua Doodle Mat
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Large reusable drawing pad uses water for "ink"
This plastic pad comes with a refillable felt tip pen that holds plain water. When you draw on the pad with a pen (or a brush loaded with water), it produces a pleasingly solid blue line. When the water dries, the line disappears completely. When my daughter was three she played with it almost every day.
04/14/17Aqua Doodle Mat ($12)