The principle of ochel nefesh and its extension to allow activities on Yom Tov that are non-food preparation oriented

The nature of the dove that it doesn't travel too far from its cote- idea from Ishbitzer Rebbe on an infant and his mother and Rav Kook's special message to a group of olim from Germany in the 1930's

The principle of 'breira' - retroactive designation and its application to Yom Tov, tumat ohel- application to kohanim entering me'arat hamachpela

The balance between marit ayin and Simchat Yomtov - applications to business meeting in non-kosher restaurant, using lights on a timer on Shabbat

Can the mitzvah of Simchat Yom Tov be fulfilled by eating chicken?

The story of the faulty egg sale, application to other cases of erroneous sales and discussion of the deeper idea of why the story is part of the Gemara

Burying the dead on Yom Tov asking gentiles or the Jewish community- contemporary application of honoring the deceased

The difference between the 2 day holiday of Rosh Hashana vs Yom Tov in chutz Laaretz - the deeper idea of 'yoma arichta'

The principle of ein mevatlin issur lchatchila and its application by Chanuka and everyday life

The discussion of whether the egg is sold by weight or quantity of eggs- how this halacha impacts the principle of nullification/bittul in a pile