Every year I buy several boxes of disposable contact lenses, enough to last through the whole year. I'll take them out from time to time, clean them, toss them away and replace them when it feels right. Then when I get down to that last pair of lenses, I'll somehow get that pair to last another 6 months.
_________________________
"Returning hate for hate multiplies hate, adding deeper darkness to a night already devoid of stars." - Martin Luther King, Jr.