Requirement to make memorials for the Temple: Rosh HaShanah 30a; Succah 41a
Whether one memorializes the Temple with a Mitzvah which has Biblical roots: Succah 44a
Dirtying building-lime with straw or sand, before using it: Shabbat 80b Tearing clothing upon seeing Jerusalem, the Temple, or the Cities of Judea in ruins: Moed Katan 26a
Repairing the above tears: Moed Katan 26a-b
One tears for Jerusalem upon reaching Mt. Scopus: Moed Katan 26a
Verses to recite upon seeing the Temple in ruins: Moed Katan 26a
Verses to recite upon seeing Jerusalem in ruins: Moed Katan 26a
Verses to recite upon seeing the Cities of Judea in ruins: Moed Katan 26a
Singing: Gittin 7a
Use of musical instruments: Gittin 7a
For a bride or groom to wear special wedding crowns: Gittin 7a
Legal enactments reminiscent of the Temple times: Rosh HaShanah 30a; Succah 41a, 44a