I had an old card 4GB SD card lying around for some time. I decided to make good use of it. 1) I bought a cheap 4 in 1 card Reader. 2) Open the plastic casing of the SD card as well as the card reader. 3) Permanently glue the SD chip into the card reader SD card slot 4) Put the cardreader inside its casing. Voila!
It works as a 4GB USB Drive and whenever I insert a micro SD card in the card reader the windows opens the MicroSD and ignores the glued SD.