Not to add to the season start message mess, but I've found and installed these
copper heatsinks on the RaspBerry Pi. Reduced the overall temps inside the Adafruit boxes from 58-60C to 47-48C. Still well below running temps, but if you are doing vision on the Pi, this will be a good idea. They are always out of stock, he builds them as needed. Nice work, I was pleased with my three sets.