Some parts in game have their editor value set to "none" but otherwise work to an extent, this mod changes the value to "VAB" allowing you to use some of these normally hidden parts all you want.
Currently enabled parts include:
Advanced claw:
Seems to do nothing, but it looks cool, and the claw part is modeled inside of it, so thats neat.
Heavy strut:
Like the normal strut but its heavy and... stronger[citation needed] and it looks cooler in every way to the normal strut.
Eva Parachute:
Seems to be the parachute for when eva chutes are added, but its a placeable part, so thats interesting, seems good for when you want some variety in your chutes.
Nervus medium hydrogen engine:
The nervus has a nozzle that can extend and retract, although i dont think extending it actually does anything right now, but it looks cool, and i mean what else do you need.
Spacedock: https://spacedock.info/mod/3347/Its Nervin Time
Source code: https://github.com/TheCalicoDragon/Nervus
License: https://github.com/TheCalicoDragon/Nervus/blob/master/LICENSE.txt