Humans are truly creative and resourceful. Nothing can stop a human mind from creating something" out of "nothing", most specially during survival mode. The below inventions or items made in prison are few good examples of what human mind's creativity, talent and intelligence can do.
"Made from razor blades; found in a cell in ‘Santa Fu’ jail in Hamburg, Germany. Jailbirds use these tools to distil alcoholic beverages forbidden in prisons. Your typical inmate’s moonshine still includes a plastic can containing fermented fruit mash or juice, an immersion coil of some sort, a rubber hose, and a plastic receptacle for the booze."
"Made of steel rails from bookshelves. On October 10, 1994, inmates Gerhard Polak and Raimund Albert used this ladder during their successful escape from ‘Santa Fu’ prison in Hamburg, Germany"
"Makeshift rope in the classic style, made from bedsheets and dish towels; length: 16 meters. On May 2, 1998 two inmates used it in a failed attempt to escape from the 6th floor of Santa Fu’ jail in Hamburg, Germany. One of the men fell, the other made it to the roof of the main gate where he was spotted by a surveillance camera."
"With segmented extension rod (13 segments, overall length: 4.5 meters); rope made of leather and string. This cleverly conceived tool assisted two inmates in their escape from Ludwigsburg prison, Germany, on August 19, 1987. The attached rod enabled them to place and retrieve the hook and thus negotiate two prison walls in succession."
"With padded handle, made from a rasp that was presumably stolen from a prison workshop. The weapon was found in a cell in the prison of Wolfenbüttel, Germany, sometime around 1993."
"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."
"This instrument was found in 1997 in the metal workshop of ‘Santa Fu’ prison in Hamburg, Germany, where an unknown inmate manufactured and hid it. It is either a weapon, or, attached to a pole, might have been designed to push away barbed wire from the top of a wall during an escape."
Radio transmitter / Bug
"Made of radio recorder parts by an inmate of Wolfenbüttel prison, Germany (battery is missing). Prisoners occasionally manageto install gizmos like this one in guard-rooms to be prepared for upcoming cell searches. Also suitable as a means of cell-to-cell communication among inmates. A standard radio serves as a receiver."
"Sometime in the seventies an inmate of Ludwigsburg prison, Germany, built this radio on the sly and hid it inside an encyclopedia. It was probably commissioned by another inmate who had no electronic expertise himself."
"An inmate of ‘Santa Fu’ prison in Hamburg, Germany, fitted a wooden handle to a piece of saw blade for better handling. The tool was found in his cell and confiscated."