Sarah Clarke still remembers the regulars. Working a full schedule as an Instacart shopper, a job she stopped doing regularly last year, she had plenty of customers who she periodically delivered groceries to. But there was oneelderly couple, in particular, that she recalls most. One time she was unable to find the mangos they typically ordered. So during a trip for a different customer to a different store, Clarke grabbed some for them. And without any promise or expectation of compensation, the former Mountain View, Calif.-based product designer drove to the couple’s home

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