Pocket Book: Crack the Code Challenges for 5E

A Pocket Book is a book of ready-made puzzles and ciphers with different (encoded) alphabets. The puzzles and ciphers can be used according to the lock-and-key principle. Moreover, the lock can be opened not only by a player who possesses the encrypted symbols but also by players with high intelligence and strength, who must roll a 1d6 with a certain value specified in the challenge. In this way, opening such a lock does not require much time, and the process becomes more exciting.
I would recommend using these ciphers for secret rooms or lost chests. On each page of the notebook, a monster is drawn next to the puzzle, hinting that the lock is encrypted by him, for example, guarding his chest with treasures or belongings.