I have a few ideas that would not use the shoulders as a leverage point due to all the collar pieces, jacket collars, and etc... It would clamp the legs and then when you squeeze the handle a rubber coated fork would pull the head up. I can see it but I need an engineer to draw it up. its rather simple. It needs to work on fat, skinny, women, men, old, new, w/accessories and w/out.
And kids, don't forget kids. And for those, holding the legs won't do.
Also, with some neckpieces, there really isn't a place for a "fork" to grasp the head. Unless it was from above, somehow (without the hair, I suppose) - again, not verly likely for kids.
Then again, if there was such a tool that would work fine for MOST adult klickys (you know, even if it didn't work for a few neckpieces) it would be a GREAT improvement.