Amazon has 34.5" X 22.5" Betheaces Water Drawing Mat for Kids for $8.99 when you ‘clip’ the $3 coupon found on the product page and apply code YWPIYNBD at checkout. Shipping is free with Prime or on orders $25+
Includes:
1 Aqua Magic Mat ?with handle color box)
1 Magic Brush
2 Magic Pens
6 Drawing Templates
4 Stencils with shape
1 Drawing Booklet