Flashbag is a USB flash drive that its size changes depending on the amount of data it holds. The size will become bigger and bigger when you store more and more data. When the device is about to blow up you will see the familiar error message on your screen: “There is not enough free space”.
The Flashbag is only a concept right now but the designer, Dima Komissarov, has a patent pending on this device, so hopefully a company will pick it up soon.