Super Soaker 50 (No doubt has been posted before, but this one comes with a really fun to read article that includes it’s history, it’s invention by NASA Scientist Lonnie Johnson, old photos, and even original tv commercials! Link in comments).
Space Shuttle Challenger being transported through Ellington Field close to Johnson Space Center in April of ’85 – visiting grandmother took the photo and wrote on the back. It exploded 10 months later.