Hi there!
Some mates and I participated in this year's SpaceApps contest by NASA on the Jet Set Mars challenge. We focused on developing a complete solution for a Mars-suitable jetpack which included an exoskeleton and a custom HUD. It seems NASA liked it, because we are currently Top-5 on Best use of Hardware category.
Aaaaaand, of course, we used KSP to simulate it!
Here is the video:
https://www.youtube.com/watch?v=fwtIp6Wt2hk
The official NASA project page:
https://2016.spaceappschallenge.org/challenges/tech/jet-set-mars/projects/mars-upv
Our website:
http://www.marsupv.com/
In our prototype, the helmet included a IMU to sense the orientation of the wearer's head. This information was then sent to KSP via a custom HID USB device the game interpreted as a joystick input. Besides the helmet movement, our prototype had two joysticks which enabled full use of KSP's EVA functionallity (and the prop-pack reacted moving the nozzles and illuminating)
Hope you like it!
Germán
PS: if you want to see more, our github repo is on NASA's website. We are part of http://www.makersupv.com/, a student community on the Universitat Politècnica de València, Spain.