It's a continually updated log of space debris that's come back to Earth, with 65 events to date.
Here's one of the more historic entries:
|In July 1969, a small fragment (about 30 cm long) fell on the deck of a German ship in the Atlantic Ocean. Other pieces fell in the water near the ship.||Identified as debris from the first stage of the Saturn booster used to launch Apollo 11 on July 16, 1969.|
Spherical pressure tanks, like this, are strikingly common:
Here's the Aerospace Corporation contact to report any pieces that happen to land near you:
"If you are aware of recovered debris not appearing here, please e-mail a description of the debris, and provide references to supporting evidence, e.g., news articles, government reports, photographs, etc. We will add sufficiently corroborated events to our list. "