As you might expect, this Reuters article doesn't provide any silver bullet methods. You probably have heard of these before. The first two involve making sacrifices, and the last three involve risk-taking.
One comment in the article had an interesting idea: we need savers no-spend days to draw attention to the consequences of the endless zero interest rate policy. It's not only hurting seniors who have to cut back on their spending, but also it's hurting the economy when savers have to cut back on their spending.