Would be very useful to have a MEMS microphone breakout similar to the SPW2430 as offered by adafruit or ADMP401 version offered by Sparkfun. The MEMS package would fit perfectly within the XY & Z form factor of TinyDuino. Best possible implementation would involve getting around the Analog output of the MEMS microphones - A complete SPI/I2C solution

For compact projects, would be excellent to have a "Sensor" Board with a SPW2430/ADMP401 and the luminosity sensor current offered on one board sensor on one board.