If you have ever complained about having to swap a hard drive out of an external hard drive enclosure, I have found the perfect solution for you: The SATA HDD Multi-Function Dock.
According to the website,
This SATA HDD Dock allows you to plug any 2.5″ or 3.5″ SATA Harddisk to your computer via USB or ESATA port, a powerful tool for data transfer, backup and cloning. It functions as a 2-port USB hub and card reader as well. The device is compatible with both PCs and Macs.
Hat tip to Wired for bringing this to my attention.