Tiny AVR Programmer - Two ISP headers to use with other AVR microcontrollers - Plugs directly into USB port: Attiny: Amazon.com: Industrial & Scientific
How to unbrick an ATtiny: Is your ATtiny DEAD? Fix it here!
5Pcs/Lot New Original ATTINY88-AU ATTINY88 AVR AVR® ATtiny Microcontroller IC 8-Bit 12MHz 8KB (4K x 16) FLASH 32-TQFP (7x7) - AliExpress
GitHub - ChrisMicro/AttinySound: sound generation on the AVR-Attiny cpus