The National Park Service is collecting cranes, with personal messages of peace, in one of three formats to be saved as part of “Messages of Peace.” The cranes will be collected in a time capsule to be opened in 2045, the 100th anniversary of the Hiroshima bombing. The deadline to send your crane is August 5, 2020.

https://www.nps.gov/mapr/learn/historyculture/messages-of-peace.htm