Or this post about writing in "sand"?
I have just discovered the next best thing, except possibly even BETTER!
Each letter has its own textured feel, and most of the associated pictures have a touchy-feely patch! (See the bee stripes and the car?) So cute! So, not only can your child trace the letters to as a precursor to writing, there is also an association of the written letter/symbol with the correct sound! Remember my post about sounds? :) (I love this book!)
Here's a close up with my super basic no frills digital camera . . . (the bee's stripes are fuzzy!)
There's even a similar book for numbers!
Just thought I would share! :)