Whether you're headed to South Beach, Puerto Vallarta, Las Vegas or some further flung, less common destination for the yearly bacchanal Americans recognize as spring break, pack accordingly. You want to make sure you're properly stocked for warm weather and good times. The essentials for this kind of trip are not defined by their slick polish but by their easygoing character. Here are the must-haves every guy should be putting into his suitcase.