My father has gone to the same tea stall almost every morning since retirement. A few years ago, money was tight for him, though he would never admit it. I spoke privately to the stall owner and started paying a small amount in advance every month. I told him never to mention my name and to just tell my father that his old pending balance was adjusted or someone had already paid.
My father still comes home sometimes looking pleased and says, "That tea guy never remembers his accounts properly." I just nod. The strange part is that I'm not doing particularly well financially either, but that tiny expense is the one thing I never feel bad about. He spent decades paying for things without telling us how difficult it was. This is probably my smallest secret.