The Mass Observation archive are holding another one-day-diary day. The first one was in 1937, and they repeated the exercise last year. I shall certainly take part, and may blog an edited version here, with anything that might offend or incriminate redacted. For reasons I shall not reveal, it's a great pity it's not today.
There are details of how to participate here: http://www.massobs.org.uk/12may2011.html