Updated tutorial: USB HID Terminal Alternative – Trinket Fake USB Serial @ The Adafruit Learning System « Adafruit Industries – Makers, hackers, artists, designers and engineers!
USB Interface HID to Serial HID Adapter Connector for Qinheng CH9326 Driver-free full Platform Support
USB HID Bluetooth変換アダプタキット USB2BT | Bit Trade One, LTD
Generic HID - DIY USB HID / Joystick / CNC Pendant