Secret kindness agent

Paying for a stranger is easy with money and hard inside: you have to give up the thank you.

Go into a cafe or bakery where there is a queue and someone standing behind you. When you pay, tell the cashier quietly to add whatever the next person orders to your bill. Ask them not to say who it was from — just that it is already paid for. Do not turn around and do not wait by the door to see the reaction: that part is the actual task. Pick an amount you will not regret tomorrow — a cup of coffee, not lunch for two.

How badly did you want the person to find out it was you?