Avr Programmer Adapter Shield from JasonKits on Tindie
Amazon.com: KeeYees 2pcs Downloader Programmer for USBASP for ISP with Cable and 10Pin to 6Pin Adapter Board for 51 for AVR Series Microcontroller : Electronics
DIY Arduino Shield Attiny Programming AVR Programmer With - Etsy
USBasp Programmer for Atmel AVR v1.0 - Arnab Kumar Das