One of the best travel tips I ever received was to pack your "disposable clothing" first. So before you throw away all of those socks and undies with holes in them, pack them for wearing on your next trip. After wearing them one last time, deposit them in your hotel trash can! Also consider buying new, inexpensive garments at low price retailers that you can wear once and leave behind. "Disposable clothing" means less laundry when you get home and more room in your suitcase for souvenirs.