Just saw this advertised on t.v.......it's a larch 'drrawing mat' which you use special water filled pens or just wet hands- to make pictures- then magically (!) they disapear as the mat dries- i will get 1 as alex is always wanting to paint- and i cannot stand the planning i have to do to do such a simple thing spontaneously!!!!! Also all 3 of mine still love Megasketchers- so this seems a similar thing!
www.toysrus.co.uk/Product.aspx/TruOrFindUsing/TruAZOfBrands/TruLearningTomy/287628