Some pretty important stuff was invented in the '60s. The ATM, Valium, audio cassettes, and of course, the celebrity lunch box.
In the same way as getting a doll
made in your likeness, having your face on a lunch box meant that you had reached a level of fame so astronomical, that your amazing and ball breaking talent simply could not be contained by the screen/ stage. People felt such adoration for you that they had to have a piece of you with them at all times, and if you weren't old enough to be a groupie, by gum you were young enough to have a lunch box!
If anything the celebrity lunch box raises a lot of questions. Who was the person that came up with the idea of celebrities on lunch boxes? And more importantly, who was the first celebrity to think "I've really made it big now, the next logical step is to have a likeness of my face embossed on a flimsy, tin box that children will carry. PUT FOOD IN ME KIDS".
It seems like every American drama or sitcom from the '60s, '70s and '80s had a lunch box, which is kind of bizarre when you think of the target demographic (Do you really think that kids ran home to watch Knight Rider? Or more importantly, that primary school children gathered around to listen to 'I Was Made For Loving You' by KISS?). Of course if you thought a guy was the dreamiest, you needed to advertise this crush-- hello, how is would everyone know that Bobby Sherman was your guy??
Even though celebrity lunch boxes are still made (not including cheapo two dollar shop Hannah Montana knock offs) they're usually only for collectible purposes now, and definitely not your ham sandwich, unfortunately. Unless there are actually kids out there bringing Kurt Cobain lunch boxes and matching thermoses to school...