Magnetic letters and numbers were first introduced in the Fisher-Price School Days Desk. Photograph by Janeen Bath Initially, he’d envisioned a toy version of a highway billboard.

The highly rated Crayola 3-in-1 Magnetic Double Easel with Letters and Numbers is on sale for only $29.99 (50% off) at the Walmart website right now! Crayola 3-in-1 Magnetic Double Easel Set with ...