For Parallels, in Siberia, made from postage selvage (thanks for the link, Eva!):
And one made of the stick-on mail barcodes the post office uses.

For the 'Twisted' call, a photograph manipulated in photoshop
This one had its own misadventure, and was delivered to me, even though my address was on the back, scrawled in my bad handwriting, and in the 'wrong' direction. I reposted it inside an envelope.
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For the 'Angels & Demons call. The images were taken on my cell phone the same night as the blue image above (lights were part of the band Alt J's concert performance). All the pictures include the exit sign which was distracting/fascinating me through the lights.
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And, spurred on by the beautiful artistamps that are the documentation for the Malerwinkelhaus call blogged by Eva, I sent these in. Jean had suggested this one for me ages ago, and I had set it aside. Nothing like leaving it to the last minute.
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Spirit of the Forest, to be displayed at the Mercury Theatre in Colchester in February, coinciding with a performance of Hansel & Gretel.