For a couple of years I had a lot of fun making small bronze boxes cast from crocheted yarn, topped with small creatures (birds are essential of course, but also fish and butterflies), and colored cheerfully with jewel tones or iridescence. 

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The boxes are an outgrowth of the crocheted Moebius strip pieces. The fluttery organic crocheted edges of some of the Moebius strips suggested to me seaweed or coral reefs, so many of those pieces include fish rather than birds, and this carried over into many of the boxes where the crochet design suggests waves, which make them suitable for fish or seabirds.