The Classic Doodler is portable, with convenient carrying handles. Your kid will use this magnetic doodling tablet on the couch, in bed, in the car, at a restaurant, in the doctor's waiting room, on an airplane, on the toilet -- have I made my point yet?
The Classic Doodler comes with a magnetic pen and 2 stamps -- a circle and a triangle. Your kid doodles and then erases his/her creation by sliding the eraser along the bottom of the doodler. And then the fun begins again.
My kid can sit for about 30 minutes uninterrupted drawing on her Magna Doodle. That's a long time in the life of an attention-span-challenged 3-year-old!