Use Arduino as ISP to Burn Bootloader on AVR Microcontrollers
ISP Programmer for Arduino and AVR | Jaycar Electronics
Avr Isp Bootloader Shield Burning Programmer Board For Atmega328p Bootloader Module With Buzzer And Led Indicator For Arduino - Industrial Computer & Accessories - AliExpress
How to Program Arduino with AVR ISP Programmer
Standalone AVR ISP Programmer Shield Kit - includes blank chip! : ID 462 : $17.50 : Adafruit Industries, Unique & fun DIY electronics and kits