Tzitzit, the fringes on a 4-cornered garment, are often worn by the non-religious in times of trouble. Today thousands of secular soldiers are wearing tzitzit and US Jews have launched project “Spiritual Armor” to send tzitzit to Israeli soldiers.
https://raisethon.com/spiritualarmor
https://www.jns.org/us-jews-supply-thousands-of-tzitzit-to-israeli-soldiers/