BB Q20 Keyboard with trackpad, USB/I2C/PMOD by Solder Party
USB-I2C/SPI/GPIO/PWM/ADC Interface | $19.10 to $89.40
DLN-2-U2C USB-I2C/SPI/GPIO Adapter (in U2C-12 compatible mode)
Using I²C Sensors With Any Linux Via USB And IIO | Hackaday
LinkM - USB to I2C - COM-09903 - SparkFun Electronics
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 I2C Click | Blog
USB-I2C interface module
atmega - Re-purpose USB cable to carry I2C - Electrical Engineering Stack Exchange
USB UART/I2C Debugger for Raspberry Pi, Arduino from SB Components on Tindie
I2C Shield for WiPy With USB Port - store.ncd.io
Amazon.com: EC Buying FT200XD CJMCU-200 USB to Serial Adapter USB to I2C Serial Module IIC Port TTL Level Input CMOS Output Transfer Convertor Serial Adapter : Electronics
USB to I2C 2 Click
ATTINY85 TINY85 General Micro USB Development Board I2C IIC | eBay