Thanks, Stephen. I've been having a look at folks' "luxuries". A guitar has been chosen 57 times - often by musicians (Clapton, McCartney, Brian May, John Lee Hooker, Tex Ritter, John Williams, Julian Bream, Cliff Richard), but also by Tony Blair, Colin Firth, Charles Dance, James Mason, Martin Clunes, Jon Pertwee, Kenneth Connor, David Attenborough, Greg Dyke, Richard Madeley, Rob Brydon, Eric Idle, Harry Secombe, Max Wall, boxer John Conteh, boxing commentator Harry Carpenter, showjumper Pat Smythe, Daley Thompson, Douglas Adams and Bing Crosby.
Ewan McGregor, Bill Nighy, Paul Jones (ex Manfred Mann) and five others went with a harmonica (or, in Nighy's case, "a boxed set of blues harps and instruction book"). Desmond Tutu, a man after my own heart, chose "an ice-cream maker (especially for rum and raisin flavour)" with an honourable mention here for Denis Healey's "a very big box of chocolates". Seb Coe, Michael Palin, Paul Merton, David Niven, Michael Caine and fifty-odd other sensible sorts chose a bed (though Sid James, true to form, specified a double).
As for books, I'm not going there (though I noted Clapton's was Barnaby Rudge)...