Like the quote on the main page, containers of all sorts can be out to kill you. Open a chest? It tries to but your hand off. Break open a pot? It flings sharp pottery shards at you. Unblock a tomb? The door falls over and tries to flatten you.
Zig Zagged: The chest is completely normal... Except that there's a monster inside! ...Except the monster is dead, as it either starved or suffocated... Except that it still doesn't stop it from attacking you.
Averted: Even though an NPC warn you that there might be Chest Monsters inside, there aren't any.
Enforced: The development team wanted a Nintendo Hard game, so they made many helpful-looking objects become harmful monsters.
Lampshaded: "Did that chest just lick its lips—?!" "Don't be silly; chests don't have lips...!"
Invoked: Emperor Evulz uses his magic to create powerful monsters that look like ordinary treasure chests, then scatters them throughout the various dungeons and caves of the realm. Why...? Why not?
Defied: "This thermal imaging camera will make sure whatever you try to pick up isn't some weird animal."
Discussed: "Will this be like one of those RPGs where every other item you get is an enemy in disguise?"
Conversed: "How, exactly, does the chest mimic in this game make any sense biologically? No adventurers have been here for a thousand years, so mimicking a chest isn't going to get it any food. How is it still alive, then?"
Deconstructed: The chest monsters went extinct the moment they started bringing in means to check for them or simply changed the design of their chests.
Reconstructed: ...except in dungeons where they were used as security measures.
Played For Laughs:
Greedy Guest Star Party MemberRouge tricks the heroes into entering a dungeon to challenge the monsters there, then slips past them to take all the treasure. Unfortunately for him, the first chest he opens is a mimic...
These things still exist in modern fantasy settings, and tend to look like suitcases. After a long flight, Nougat just wants to retrieve his luggage and get to the hotel, but life's never that simple, is it?
The Monster inside is a Cute Monster Girl with large breasts and an Optional Party Member
Played For Drama: One of these two chests contains the Scarlet Star Sapphire, which you need to stop Emperor Evulz's latest scheme. The other holds a monster that will perfectly mimic the Sapphire until you grab it, at which point your hands will stick to the false gem and the monster will start to eat your hero alive while your comrades desperately fight to save you. Choose wisely...