Some of you may have heard, but I'm creating a short 40 minute "horror" game in which you focus entirely on solving puzzles within a mansion. I'm almost finished, but unfortunately I'm running out of ideas for new puzzles that are more than just "Get item A and use it to open door B". I need puzzles that are more like "You have a 3-ounce cup, a 5-ounce cup, and an 8-ounce cup. Pour exactly 4 ounces of water into a bottle without going over."
So, in an attempt to get the creative juices flowing again (and to possibly "borrow" an idea or two), let's open a discussion about puzzles in video games. Think back to any game you have ever played, whether RPG Maker created or not, and shout out a random puzzle that sticks out in your memory.