I once decorated the back of a door using a hundred or so carefully unfolded foil wrappers from Tunnock's Teacakes - fixed with a water based size, the effect was rather quite stunning.

Graphically, they're the very embodiment of Hoary Tradition and it pleases me no end to see them employing same on the teacake page of their website - but, hold on, what's this? Dark chocolate teacakes? Methinks a jaunt down the ASDAs in in order...

http://www.tunnock.co.uk/products/teacakes/