If you're looking for anime similar to Guru Guru Petit Anime Gekijou, you might like these titles.
Chibi shorts for Sacrificial Princess and the King of Beasts published on the official Twitter and YouTube accounts for the series.
Chibi shorts for The Eminence in Shadow published on Kadokawa's official YouTube account.
Chibi shorts for The Eminence in Shadow 2nd Season published on Kadokawa's official YouTube account.