Some of you know that I always have to have an IT-related project on the go.
And some of us think, oh no not him again with another Frankenstein project...
Option 1/
Replace HDD with industrial grade SSD HDD which will allow you up to -40C to +85C operating temps if you get the right model.
Option 2/
Buy one of those cheap hotel room minibar fridge thingies and stick your gloss black plastic contraption in there.
Side note: You may wish to read
this Google whitepaper on HDD failure rates, especially their analysis on effects of temperature. Whilst there has been some debate on the content of this white paper in some circles (so don't take it as complete gospel), its still interesting reading.
Edit to add:
A quick Google brought out
this guy's home experiments with passive HDD cooling.