Have any spare 2.5″ SATA drives? Don’t throw them away just yet: Century is selling hard drive/solid state drive enclosures which provide USB 3.0 compatibility.
The enclosure still works with USB 2.0 ports, so you don’t have to worry if you’re still saving up for a USB 3.0-equipped computer. The enclosure also has a neat screw-less design, so you can assemble your own external hard drive in a snap.
You can pre-order the Century USB 3.0 2.5″ HDD/SSD enclosure at Geek Stuff 4 U for about $48 (USD). Shipping starts April 10.