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Egg prickers are extremely useful devices for pricking eggs so that no albumen escapes while they’re boiling. They are also very good for taking blood samples from your thumb and making completely unnecessary indentations in soft fruit.
Special Easter egg prickers are available in the shape of a cross, as are quail egg prickers, although these are usually too small to see with the naked eye. Faberge egg prickers encrusted with diamonds are extremely sought after, mainly because none were ever made.