I did that two weeks ago - and had decided to take the long way home, so was 10 miles away, along the lake front, where there are no stores anywhere close.

The call to the wife didn't work though - she had a headache, was annoyed that I hadn't called and couldn't find my change kit anyway. I walked for an hour before getting to a payphone to call her, and another hour to get home.

She did ride down and walk/ride with me though.
(and of course, as soon as we got in the apartment, we saw the kit on the bathroom floor)