One of these.
[VIDEO]http://www.amazon.com/Thermaltake-Sata-HDD-Docking-Station/dp/B0012Z3MKW/ref=sr_1_2?ie=UTF8&qid=1344438498&sr=8-2&keywords=thermaltake+blacx]Amazon.com: Thermaltake Sata HDD USB Docking Station: Electronics[/VIDEO]
I got a shitload of random old hard drives kicking around, am way too lazy to either install them all in an enclosure to mount them. Since I don't have a tower at home, this works the goods.
(Pardon the messy wires, it's not permanently there, I just wanted to grab some shit off of my HTPC. )
I've got the dual port one.