I remember those boxes of cereal! You buy a variety pack of maybe 10 or 12 small boxes (seems like they always included some Special K or other undesirable kinds, and we fought for the sugar-coated ones). The box was perforated, as I recall, and it could be used as a bowl. More often, we just ate the cereal and had a glass of milk. I guess that still leaves a pesky glass to clean. Turns out we have a dishwasher right next to the sink.... too much trouble to put a glass in there, I guess.
Snowflakes.
They do still sell those. I believe Santa Claus put some in the stockings at Grammy’s house, this past Christmas. The 4 year old thought the little cereals were “adorable”. I think they are also frequently used at the motels’ breakfast bar buffet set-ups.