The term 'KIND OF PACK' can be summarized by two crossword solutions: MUD (3 letters) and FANNY (5 letters). MUD is an acronym for Multi-Utility Device, which is a type of backpack designed to carry multiple items. FANNY stands for FANNY Pack, which is a small bag that is worn around the waist and typically used to store small items such as keys, money, and cell phones. Both MUD and FANNY Packs are popular choices for carrying items while traveling or engaging in outdoor activities.