Here’s a link to the fantastic British brainy-toys site Grand Illusions that I’ve been hoarding for awhile, hoping to someday reproduce the process and post it as a tutorial. I have tried sun-drying several of the largest orange peels I can find on suitable forms, and shown above is the one functional round box that I have produced. As you can see, it is quite small and ugly compared to these:
Just posted this over at MAKE, but I wanted a dedicated page to show my progress towards reproducing the process so far. The original description mentions that the peels are “squeezed thin” after soaking, but before forming and drying, which is something I haven’t attempted yet. How, I wonder, do you squeeze an intact hemispherical citrus peel into a thin layer without damaging it?