This time last year I was sent a link to a beautiful, charming video made by Li Yi and Colin, who are friends of my niece, the other significant Tom in my life (she is in full Tamsin but has been Tom since she was a little thing). This year they e-mailed me themselves with a new one they've made which I think is just as delightful, and perhaps even cleverer with more detail. They really should be winning prizes for these. I understand they're getting married in the coming year so it's congratulations all round to them. Thanks Colin and Li Yi!