From the Tennessee State Museum collection: Pattern 1853 Enfield .577 bullets carved as trench art by a Confederate soldier. (As usual, click on image for larger version.)

Metal detectors find vast quantities of Civil War bullets. Bullets bitten on during surgeries are not rare. Also, bullets whittled into game pieces for checkers and chess are frequently encountered. These expressions of war-time animosity are extraordinary and very amusing.

Hat tip to Chelius Carter.