Sitting on the train home (which is amazing in itself this week given it's before 9pm) and there's a baby, maybe about 10 months old having the best time, in hysterical laughter playing with his mum and a plastic spoon.
His laugh is a proper cackle and so loud, everyone on the train is joining in and it's absolutely made my day.
It really is the little things. What's happened to make you smile today?