The term 'small piece of luggage' can be summarized by two crossword solutions: SATCHEL (7 letters) and onesuiter (9 letters). A SATCHEL is a type of bag, usually made of leather or canvas, with a flat bottom and a shoulder strap. It is often used for carrying books or other items. A onesuiter is a type of suitcase that is designed to hold one outfit, including a shirt, pants, and shoes. It is typically lightweight and compact, making it ideal for short trips or for carrying on an airplane.