As for the Topic of the Day...
I shudder to think the number of boxes of cereal that my parents bought for me and my three brothers while we were growing up. And since my father usually took one - if not all four(!) - of us to the weekly trips to the commissary, my brothers and I usually were able to select the cereals we wanted for that week. I think we tried everything that came out from 1973-1983. -And, yes, I do remember "C-3POs".
The ones that stick in my head: Cap'n Crunch (which never had enough of those "berries"), Life, Crispix, Cheerios, the whole Monster collection (Count Chocula, Boo-Berry, etc.), Fruity Pebbles, Cocoa Puffs(!), Trix, Lucky Charms, Kix, Cocoa Krispies, Cookie Crisp, Golden Grahams, Raisin Bran, etc., etc., etc.