Here is a concept device that would be really useful if it should be actually placed into production, it would be perfect for those microSD cards you have laying all over the place. The device called the Collector USB Flash Drive concept was designed by Fang-Chun Tsai and still merely an idea until a company shows interest. It serves as a memory card reader with a few slots for microSD cards and acts like a USB Flash Drive thus giving access to all cards at once.
It would serve as the perfect memory card reader for those who has a lot of microSD cards working with at once. Hopefully it will materialize into an actual product.
Link: Geeky Gadgets