There is a project--Mini MicroSD Reader for Android Smartphones & Tablets on Kickstarter....
It works with the following devices:
Samsung Galaxy S2, S3, Note, Note 2; Class 1 support.
Motorola RAZR M, RAZR HD, RAZR MAXX HD; Class 1 support.
HTC One X+, Evo 4G LTE (Sprint), DROID DNA; Class 1 support.
Samsung Galaxy Nexus, Google Nexus 7 & Nexus 10; Class 2 support.
Nook Color, Kindle Fire; Class 3 support.
Tablets using RockChip & AllWinner chips; Sonicview N710; Class 1 support.
