Why? Because old people have cool stuff, dude. Do your research on www.craigslist.com and www.yardsalesearch.com and make your way out to Sun City and Sun City West for the treasure hunt of a lifetime. The Sun Cities are home to retirees from across the nation, and when they're ready to part with their wares, the finds can range from World War II memorabilia to handcrafted furniture to other collectibles. Not to be crass, but keep an eye out for estate sales — that usually means there's an open house and everything is up for grabs.