The term 'Things to Crack' refers to two different types of objects that require cracking or unlocking. The first is codes, which are a set of instructions or symbols that must be deciphered in order to gain access to something. Codes can be used to protect information, such as passwords, and can be found in various forms, such as text, audio, or visual. The second type of object is SAFES, which are secure containers that must be opened using a combination of numbers or a key. SAFES are often used to store valuable items, such as money or jewelry, and can be found in homes, businesses, and banks.