In what must be the most unappetizing breakfast combination since soylent green and cream soda, two junior spacemen (no girls allowed!) chase their Cheerios with V-8 juice in this commercial from 1960. Why? Because they needed a box top and can label to get a "moon rocket" game.

Watch the whole thing at the Prelinger Archives. (Obsessive detail: They don't appear to be using the premier flatware of futuristic astronauts. So unchic!)