i'm working on two or three right now. >> reporter: yes, at age 102 eddie goldfarb is still inventingng to his list of over 800 toys. >> i believe if you do creative work of any kind, if you start with nothing and end with something it stimulates your brain, and i think that's very good for your body. > reporter: growing up in chicago in the 1920s, goldfarb believed he would someday be an applied physicist. but lacking the money for college, he joined the navy and fought on the "uss batfish" submarine during world war ii. when he wasn't dodging depth charges, he was in his bunk jotting down ideas for toys to invent. he figured they might be cheap to manufacture. >> toys was going to be just the beginning. i realized that if i invented a successful game it could sell a million units in one year easily, that a million families got together, and i realized that the toy industry is a noble industry. >> reporter: and you might say eddie first cut his teeth in the toy industry quite literally, with an invention you're probably familiar with. >> this is what what it does. >> reporter: yes, e