Adafruit I2S MEMS Microphone Breakout - SPH0645LM4H : ID 3421 : $6.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: HiLetgo SPH0645 I2S MEMS Microphone Breakout Module SPH0645LM4H Microphone Module 1.6-3.6V for Arduino Raspberry Pi : Electronics
Close Range / Low Volume I2S MEMS Microphone Breakout Board
SparkFun Analog MEMS Microphone Breakout - ICS-40180 - Omni-Directional mic Features OpAmp Plug Directly into ADC on a microcontroller Low Profile Microphone on Bottom Side for Flush mounting: Amazon.com: Industrial & Scientific