Paul I doubt many people would want to give up what would be 'Cherished' items. However in keeping with the comedy could you just get some stuff and make outrageous claims of its provenance? Eg The Landlady of the gust house the Benny Hill stayed in , her budgies mirror and the budgie was called 'Alfred' as the was his real name. Its just an example and not a great one but if you get my drift you can make the prizes as funny as you can . You could even supply a clearly bogus letter of authenticity in a clip frame etc. just a thought .