Mobidapter: The SD Adapter for USB Memory Sticks
"USB memory pens have become the default way to carry and transfer data, but until now it has been impossible to connect them to mobile phones and PDAs. Elan's Mobidapter enables connection via an SD slot so that you can transfer your files anywhere - without a PC!"
You'd definitely want to be careful not to let the adaptor dangle - the pressure might be too much for the microSD card slot on your phone - but this is a cool solution for those people who need to get information from a USB flash drive onto their phone. I'm not one of those people mind you, nor can I imagine the scenario in which this would be a needed accessory, but hey, maybe you can!