The nicely out of focus shot above shows a little bit of flashing. (The current laptop doesn't take XD cards, so I'm having to bounce everything via the old one and a memory stick so can't be arsed to do it again.) The material used is the foil from a champagne bottle - the first bit you throw away. Mrs F's little eyes lit up when the bottle came out off the rack, but then went back to carving her name in the worktop when I wandered off with just the foil and a craft knife.
Nothing much to add. The foil is cut into strips and poked and prodded with a pencil until it fits, and then tidied up with a knife. As can be seen the pots are now on - drilled with a 2mm bit between the fingers to indent.