I've always envisioned that they should be covered in leather with an old school single bar face guard attached, chin strap optional. Either that or make a welding mask out of them.
Maybe make them into a head vice, complete with threaded bar and handle. Will fit anyone and can be used for small home improvement projects.
I will be interested to take a look at them and see if any light bulbs turn on... hmm, a good miner's hat could be made with duct tape and flashlight
