Heinz and Jutta Holzapfel spent months carefully crafting their escape tools:

• Hand-lathed pulley
• Polyester shoulder strap
• Gloves
• Black sweaters and pants
• Flashlight with a funnel attachment painted black made from the tip of Günter’s school cone. It gives off only highly directional light rather than scattered light which could betray them.
  
• A 500 gram hammer wrapped in foam rubber to deaden thuds. Covered in fluorescent paint to make it visible in the dark. A lug and a carabiner on the handle attached to a 45 meter long synthetic rope painted black
• A soot-covered cork for darkening their faces
• Foam-soled “creeping socks”
• A briefcase containing: report cards, family register, party documents, wage tax cards, certificates of vaccination, etc.