The Art Fund has launched public appeal "to help save JMW Turner's The Blue Rigi for the nation," ie the Tate Gallery. The aim is to collect £2.45 million by March 20, with the total price being £4.95 million. One fund-raising effort is selling brushstrokes in the painting at http://www.artfund.org/savebluerigi/The_Blue_Rigi.html
The idea was launched with some celebrities buying brushstrokes, including David Hockney, Peter Blake, Antony Gormley and Bridget Riley. However, with each brushstroke costing £5, even a sell-out is only going to raise £300,000.
Early buyers can get a bit of mountain or figure. Leave it until later, and you'll be filling in bits of sky....