The way to open the Baldur's Gate 3 toy box is to use a pick lock. After opening it, you will find that there are many rewards inside, including gold coins, spell scrolls, gold coins, and notes.
Answer: Use lock pick to open
Players first go to a location behind a cliff on the west side of the Road of Revenge in the Underdark. After defeating the Mimic, they can see the Toy Treasure Chest.
At this time, players need to perform identification. If the identification is successful, a Harper supply point box will be found in the middle.
The obtained boxes can all be opened using pick locks. After opening, you will find the rewards inside.
They are gold coins, a spell scroll, a ring and a note. This note is to advance the subsequent plot.