Thieve's tools are perfect for making your life in palaces and memories easier while playing Persona 5: Royal. When you level up the wizard character Morgana, you can acquire more to use as you play. A large number that many will want to win is the Eternal Hook.
You can earn it after reaching rank 6 with the Magician character. You can do this by continually dating Morgana and spending them on her when you get the chance during your game. If you have a wizard based character on your character, you can increase your rating, even more, when spending time with Morgana to make it faster.
Once you achieve the ability to access this weapon, you need a variety of materials to craft it.
- 20 aluminum sheets
- 10 Liquid mercury
You can only get these materials in specific locations from particular enemies. You can receive Aluminum Sheets from Anzu that appear in Futaba and Ganesha's Palace, which you can find in Okumura Spaceport. When you search for Liquid Mercury, you can find it on Anubis which is in Futaba Palace and Decarabia in Okumura Palace.
Of your choices, you might want to spend the most time looking for Anzu and Anubis which you can find inside Futaba Palace. Because you can find them in one place, you don't have to run around the game so much looking for different shadows to fight. However, these enemies have the potential to spawn in Mementos after you've defeated them in the Palace, so all is not lost if you've already passed these locations and don't have the required items yet.
Eternal crochet will solve a lot of your lockpick problems, however. You won't have to create new hooks to move forward, and you will be able to freely get all of the useful items stored behind the one you come across. This is a great item to have, so make sure you receive it when you get the chance.