Since you have your thermal chamber, how about a look into how components like resistors change with temperature?
If they are rated ay 100ppm, it is a constant rise or fall, or are they optimized to have a zero resistance/deg change around about 25 degrees?
Or is it just all over the place. Some brands flat at room temperature, others not flat at all. Some increasing with temperature, others falling with temperature.
Do different values from the same manufacturer behave the same, or totally differently?
If you take some metal film resistors and measure them accurately at room temperature. Then you take then up to 80 degrees, and let them cool, how much does the room temperature resistance change by?
It would be hard to test a large number of parts, but if wires are attached to the part and taken out of the box, you could do a representative sample.
Not sure if anyone else would be interested, but I would.