Der Innovative Einbrecher [The Innovative Burglar]

Someone broke into your home and instead of taking something, left behind a pile of items. The burglar only locked one of your possessions in a box, which he apparently knew was particularly important to you. He is now offering to provide you with incremental information in return for payment so that you can regain your property. But you don't intend to pay the burglar at all and therefore ask your guests to solve the puzzles for you and open the box without destroying the contents.