Today we have a nice hard drive cooler from Logisys. Read full review...
This cooler provides great airflow for hard drive. I used it to cool down my Western Digital 10000 RPM drive. Everything worked nice, expect I had little problem with wires. Make sure they are far away from the fans, other than that; Logisys Aluminum Dual Fan HD Cooling Pad is a nice product for your hard drive for cheap price.
# Aluminum alloy heat sink dissipates heat most effectively
# Built-in two silent and high performance 60mm fans
# Easy installation
# Lowers hard drive operating temperatures