Don't forget to pack your toiletries, including a toothbrush and soap.

toiletries 是由名词 toilet（盥洗室）加上后缀 -ries 构成的名词复数形式，指"盥洗用品"或"个人卫生用品"，通常包括牙刷、牙膏、肥皂等日常清洁用品。