Maybe not quite as timeless as an Etch-a-Sketch. but I think Magna Doodles are still pretty popular. I had one as a kid, and now my kids have a Doodle Pro by Fisher-Price.
Now, while I may give this 3 stars on a product review for breaking in the first place, I have to give kudos to Fisher-Price for making this particular item SO EASY TO FIX!
Six Phillips head screws!
No adhesives or clips!
A quick bit of glue to reattach the magnet strip to the swiper, and bam, a $25 toy is kept out of a landfill.