The term 'amuse oneself' can be broken down into three crossword solutions: TOY (3 letters), PLAY (4 letters), and DISPORT (7 letters). TOY refers to an object, usually for children, that is used for entertainment or amusement. PLAY is an activity that is done for enjoyment, often involving physical or mental effort. DISPORT is a verb meaning to engage in activities for pleasure or recreation. All three words refer to activities that are done for the purpose of entertaining oneself.