Adafruit FT232H Breakout - General Purpose USB to GPIO, SPI, I2C [USB C & Stemma QT] : ID 2264 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
USB to 4bit SPI/FT1248 Breakout Module based on FT220XQ USB 4bit SPI/FT1248 IC - Socket Pin Connection - Ftdi | CPC UK
UTS2210 USB to SPI SPI Master HID device MCP2210| | - AliExpress
TINYSINE CSR USB-SPI Bluetooth CSR Chip Programmer - Audiophonics
Total Phase Aardvark | USB to I2C and SPI Host Adapter
Yocto-SPI - USB to SPI adapter (TTL 3.3V or 5V), driver-free
CH341A Programmer Module USB to UART IIC SPI I2C TTL ISP EPP/MEM Converter | eBay
SC-USB-SPI-PICO USB-to-SPI Interface Adapter for SC1905 and SC1894 | Maxim Integrated