So here is the solution I came up with, when I tried to salvage a decent pair of readers after the ear pieces broke off at their hinges. I used black bootlace string to replace the ear pieces, and glued the ends of the strings to the broken hinges with a drop of Gorilla Glue. Other glues or epoxies would also work, but the original GG has held up for a year. The string has no adjustment, they fit just snugly enough that the sides act as earpieces and the glasses stay in place. Just yank them down over your nose and shove them under your shirt to get them safely out of the way, but ready for another use.