<human>:  What is the most efficient way to pack a suitcase for a week-long vacation?
<bot>: The most efficient way to pack a suitcase for a week-long vacation is to make a list of the essential items you'll need. Consider the activities that you plan to do and itemize the clothing and accessories that you'll need. Lay the essential items out on a bed or flat surface, and then try to organize them into stacks with similar items together. Pack the suitcase, starting with the bulkiest items, such as shoes, at the bottom and finishing with lighter items, such as shirts and underwear. Roll clothing up to save space. Fill in any empty spaces with small items, such as socks and hats, to prevent other items from moving around. Make sure to leave room for souvenirs!