To get out of Toni's Apartment, you have to pack your stuff you need outside. Find the list of equipment from the suitcase. Return these four items into the suitcase.
Unlike normal walkthroughs, in Nice Game Hints you can select just the puzzle you want hints for. Here are listed the puzzles for "At Toni's Apartment" in Deponia. The guide you choose only contains information about that puzzle, reducing possible spoilers for other puzzles.