The term 'Things for One to Do' can refer to a variety of activities that an individual can do on their own. The crossword solution for this term is 'SOLOS, ' which is a five-letter word. This term can be used to describe activities such as playing a musical instrument, going for a run, or reading a book. It can also refer to activities that require more than one person, but are done without the help of others, such as competing in a race or playing a game of chess.