I am not sure what to call these but they now have transparent plastic bolts which have a nut large enough to fit a socket (5.5mm) for easier removal.

Dorkon, Dorkfly, Egg Dork by Timothy Takemoto, on Flickr
The top part of the frame bothers me less than I anticipated. These are Ridol Titanium Yellow which cost $200 new $10 second hand.

Ａｎｄ　ｔｈｅｓｅ　ｗｅｒｅ made with the cheap (1.2USD) Chinese sunglasses and some old prescription blanks.They show the world to darkly, like looking into a cavern, perhaps.

Dorkly, Caverndork Rimless by Timothy Takemoto, on Flickr