Hot answers tagged minhag
This is only a partial answer. I have heard from Rabbi Moshe Sternbuch, (formerly in South Africa where he was my family's Rav, now Raavad of the Edah Hachareidis, Jerusalem), that a Baal teshuva does NOT wear tefilin on Chol Hamoed as this is lechumrah. One only wears tefilin, if one has an existing family tradition to do so.
An earlier Jewish source is found in the writings of the Arizal in a sefer called Otzrot Chaim. In Shaar Hanekudim pereck aleph page 5 (amud aleph) [in the old editions]. The Arizal mentions the Bat Yana gazing at its egg to hatch it. The minhag of hanging it in shul though is not mentioned.
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