2.Determine which items are really necessary.

Ask yourself what you need to function day-to-day, or which items will dramatically improve your traveling experience. At the relevant destination, could any item be feasibly rented, borrowed or bought (and not kept to bring back)? Gather only the absolute essentials. Here's a short list of items that you might need to bring:

• Three changes of clothing (at most). Perhaps more socks, underwear and shirts than pants. (Consider packing synthetic fabrics, which are lighter, fold up smaller, slide past each other readily rather than distorting piles, and dry faster––especially for pants, where any difference in feel is less noticeable.)
• Toiletries, such as a toothbrush, floss, soap, shampoo, razors, and anything else you need for grooming. See below for more information about packing toiletries.
• Medical items that you currently require, such as medication, bandages or eyeglasses.
• Any charge cords or other accessories you need for your phone, laptop, or other electronic items.
• Shoes, if you'll need a pair besides your traveling shoes.
• Empty water container. A bottle will do. A flexible "hydration pack" can expand to hold more and is more convenient to carry when in use, but if the main bag is a backpack, check that the hydration pack can be comfortably carried when full along with it.
• Empty plastic bags. You can put dirty clothes in them until washing to keep them from contaminating the clean ones. They should be clear so they aren't confused with trash and thrown away. Try produce bags.
• Laundry detergent for washing by hand. Put a few scoops of powdered detergent in a plastic sandwich bag if you're going on an airplane. An inexpensive, lightweight, and long-lasting alternative is to carry a bar of laundry soap.
• A portable clothesline (available at any camping or travel goods store).
• A universal sink stopper (a flat rubber disk, available at any hardware store). A rubber ball can be an alternative, but check that it doesn't tend to float and is large enough so as to not risk falling in.

Folding Travel Bag with Wheels