tidying up – phrasal verb to make (something) tidy : to make (something) clean and organized

declutter – v. to remove clutter from a room, an area, etc.

clutter – n. a crowded or confused mass or collection : things that clutter a place

mess – n. a disordered, untidy, offensive, or unpleasant state or condition

chaos – n. a state of utter confusion

principle – n. an idea that forms the basis of something

category – n. a group of people or things that are similar in some way

memento – n. something that is kept as a reminder of a person, place, or thing

miscellaneous – n. dealing with or interested in diverse subjects

toy – n. something for a child to play with