It looks like Sebastian Kempgen's BukyVede font has an Easter egg encoded as U+F8FF:
A poster featuring the 2D structure of the water molecule.
A poster featuring the phonetic transcription of the word idiom in the International Phonetic Alphabet (IPA).
A poster featuring the morphemic analysis of the Russian word всемирный.
Discover a new Old Church Slavonic word every day.
A curated list of awesome resources on Old Church Slavonic.
Browse ASCII art and Easter eggs.
Fun Easter egg on Google's Access Proxy page.
Fun hieroglyphic Easter eggs in the Aegyptus font.
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