ST-Link STM8/STM32 v2 Compatible Programmer & Emulator : ID 2548 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: USBasp Programmer Downloader Bootloader Flashing Kit for 51 AVR USB ISP ASP Microcontroller Compatible with Ender 3 Pro cr10 CR-10 3D Printer : Electronics
USB Programmer CH341A Series Burner Chip 24 EEPROM BIOS Writer 25 SPI Flash
altera fpga/cpld usb programmer (usb blaster compatible)