How many brands of things can one name from when they were young?

I have the (unfortunate) gift of remembering all the product theme songs and music. Remember "Marvo the Mustang" from 1958? I still get that stupid song popping up now and then. How about Rice Crispies? "I am Crackle such a crispy sound -- you gotta have cracle or the clocks not wound". Why did you get me started on that? now it's in there, churning around.