HDD cooler - PRIMECOOLER PC-HDB(P) SuperSilent passive
 

Keeping your HDD cool without adding noise to your system, we'll be taking a closer look at this cooling equipment from PRIMECOOLER

with springs to reduce vibration, nice

I'm getting an aluminium bar after school to make my own heatsink, also for a HDD... passive cooling galore :)

actually the springs are there to hold down the HD onto heatsink