HCI

Portable

http://www.wearablepersonalcomputer.com/

http://www.tekgear.com/twiddler3.html

https://www.kickstarter.com/projects/70308014/kings-assembly-a-computer-mouse-full-of-awesome/description

Split

Oobly - https://geekhack.org/index.php?topic=49721.0

Commercial

https://www.kickstarter.com/projects/70308014/kings-assembly-a-computer-mouse-full-of-awesome

GamePads

1. Belkin N52TE

1. Razer Tartarus

1. Razer Orbweaver Elite Mechanical USB Gaming Keypad

1. Logitech G13 Advanced Gameboard

1. ZeleSouris Mini Gaming Keypad

Single unit

https://github.com/technomancy/atreus

Misc

finger and thumb trackball

Me DIY

thumb joystick

https://developer.mbed.org/users/AdamGreen/notebook/joystickusbmouse/

http://www.aliexpress.com/item/Free-Shipping-dual-axis-xy-joystick-module-PSP-2-Axis-Analog-Thumb-Joystick-Module-Thumb-Joystick/1879823015.html

Arduino combination

http://www.arduino.cc/en/Main/ArduinoBoardProMini

AdaFruit:

1. Arduino Pro Mini 328 - 3.3V/8 MHz

1. FTDI Serial TTL-232 USB Cable

1. FTDI Friend + extras - v1.0

http://uk.farnell.com/ftdi/ttl-232r-3v3/cable-usb-to-ttl-level-serial/dp/1329311

http://wiki.pinguino.cc/index.php/SPP_Bluetooth_Modules

http://www.highqualitybuy.com/6dof-3-axis-gyroscope-and-accelerometer-sensor-module-for-arduino-mpu-6050-BI00096.html?currency=GBP&gclid=Cj0KEQjw4qqrBRDE2K_z7Pbvjo8BEiQA39AImc1alqqZi4Ty6_7UmJ-K3p9ygwJWckq3ntVz9__sOqUaArqq8P8HAQ

http://www.ebay.co.uk/bhp/bluetooth-module-arduino

https://github.com/kriswiner/MPU-6050

http://diyhacking.com/arduino-mpu-6050-imu-sensor-tutorial/

https://decyborg.wordpress.com/2013/09/08/bluetooth-serial-communication-with-arduino-jy-mcu-bluetooth-and-macbook-pro/