: In an Instructables guide for making a matching knife handle and sheath, "Step 21: Last Chance" serves as the final warning to check all components before permanent gluing.
: An article in The Ecologist published on March 21 refers to an IPCC report as the "last chance to secure our survival" regarding climate change. Pop Culture & Media 21. Last Chance
: A research paper titled "A Program Evaluation of Nontraditional High School" references the "21 Last Chance Program," examining student data from 2009–2010. : In an Instructables guide for making a