Yesterday admittedly, but still well within the last 24 hours: turned the Paddy Wagon upside down in the shed, cleaned about half a pound of greasy grimy black gunk off the chain, sprocket and chainring, wiped the chain down with a cloth, oiled, wiped it down again, tensioned the chain, flipped bike back over. That's the half-yearly maintenance done.
Now I must try to remember where I left the giant adjustable spanner that Jurek used last weekend when he came round to help with some organ removal work...