MacGyver’s rule as the king of improvised devices is now over. Check out Marc Steinmetz’s journey through inmate arts and crafts HERE.

This SHOTGUN was made from iron bedposts; charge  made of pieces of lead from curtain tape and match-heads, to be ignited by AA batteries and a broken light bulb.
On May 21, 1984 two inmates of a prison in Celle, Germany, took a jailer as a hostage, showed off their fire power by letting go at a pane of bullet-proof glass, and escaped by car.

Other honorable mentions: the tattoo gun, radio, crucifix knife, and hand gun.