There are so many USB flash drives on the market these days that it's hard to find a design that it unique. The Memory Infinite USB drive is however, one of the most original concepts I have seen in some time.
The Memory Infinite features both a male and female USB connector. The idea is that you could daisy-chain multiple drives together to swap out files or share their combined memory.
I'm not sure how practical the design is, but I'll admit that it's pretty cool. Unfortunately, it is only a concept, so we'll likely never see this put into production.
Memory Infinite Concept USB Drive [via pclaunches]