Halloween gives brands permission to go places that would get them the stink-eye any other time of year. Most days, suggesting that customers arrange to have their ashes buried in your snack packaging would be a super fast route to a crisis meeting. But in October? Apparently, that’s brand engagement. Pringles has launched Once You Drop, inviting fans to sign a “will and taste-ament” for a chance to win a custom metal cremation urn shaped like its famous can, complete with cobweb details and...