Back in '84, when I bought a second-hand CP/M system, it ran off a 360K floppy. The guy who sold it told me that "You can buy a 10 Megabyte Winchester hard disk, and then you'll never run out of disk space".

I recently bought a 4 GB flash chip for my Sony-Ericsson W660i phone. Here are the physical dimensions from the product spec: 0.59" x 0.49" x 0.05" (L x W x H). The mind boggles.