While not primarily a tzedakah holiday, Chanukah's themes of publicizing miracles connect to visible, unashamed generosity in the public square.
A Holiday of Light in the Darkness
Chanukah is, on its surface, a military and miracle story: the Maccabean revolt against Greek cultural oppression, the rededication of the Temple, the oil that lasted eight days when it should have lasted one. It is the holiday of heroism and hidden light.
Tzedakah, as we think of it, is not one of Chanukah's primary mitzvot — there is no specific requirement to give as there is on Purim (matanot la'evyonim) or Pesach (maot chitim). And yet Chanukah contains a tzedakah teaching of a particular kind — one about visibility and courage.
Pirsumei Nissa: Publicizing the Miracle