Ключевые слова: accessibility, achievement, black background, blade, bottle opener, can opener, challenge, choice, complexity, concepts, corkscrew, creativity, efficiency, equipment, household equipment, ideas, inspiration, installing, isolated, isolated on black, isolated on white, metal, multifunctional, open, opportunity, penknife, problems, red, scissors, single object, solution, steel, success, swiss culture, utility knife, weapon, work tool,