The SSD Review:
One of the smallest we have encountered yet is the DOM (disk-on-module) form factor. A SATA-DOM is a DOM with a standard SATA data connection incorporated, such as the DIY series of SATA-DOM SSDs from Mach Xtreme Technology, with a footprint barely the length and width of a postage stamp.
Damn that’s a small SSD. It’s not the speediest SSD (advertised speed is 220MB/sec read, writes at 40MB/sec), but if you want something tiny for a wacky project you’ve got in mind, maybe this is useful.