They even had one up at Ft. Lewis (now JBLM). I saw a story where one of the German prisoners carved a very nice model boat for the camp commander as a gift.
German POWs in Iowa built a large Christmas Nativity scene that has been fully restored and is open to the public every year.
The Nativity scene the Germans built
https://www.desmoinesregister.com/story/news/2016/12/22/enduring-christmas-gift-german-pows-gave-iowa/95331578/