As nobody here has mentioned it so far, the Hope Six drum is on show in the V&A in London as part of the "Diva" exhibition at the moment - i went to see it today. There's a little write-up of Polly, though in my opinion a less diva-like person you would struggle to find! The show is fun, especially the first part: the second seems to take the view that any female star and some males can be 'divas', which i think stretches credulity a bit.

http://theweepingcross.co.uk/IMG_6866.JPG