Young Inventors...Tomorrow's Millionaires Louis Braille was just 15 when he developed the system of reading and writing by means of raised dots known as "Braille," as was Thomas Edison when he created important invention number one, the telegraphic repeating instrument. Who invented the popsicle stick? An 11 year-old Frank Epperson. You are never too young to become an inventor. History repeats itself again; some of today inventors are just as young as the inventors of yesteryear. From broken crayon holders to collapsible sponge blocks, the millionaires of tomorrow are coming from an unexpected place: grammar school.