Adafruit Pro Trinket 3V 16MHz Atmega328 Microcontroller Board Use Arduino G20

Brand New Adafruit METRO #2488 with Headers - ATmega 328, US Seller

LilyPad 328 ATmega328P Main Board compatible with Arduino

Adafruit Trinket 3V - Mini Microcontroller - 3.3V Logic - MicroUSB

Pro Micro ATmega32U4 5V 16MHz Replaces ATmega328 Pro Mini

Arduino Nano-Compatible Micro-Controller Board ATmega328P CH340G 5V 16MHz

ATmega328P Starter Kit w/ 400 Point Breadboard, 65 Jumpers, USB, Battery Cables