Brian Patrick Flynn, founder of Flynnside Out Productions. "There are really no rules, but the one thing to keep in mind is that second homes are the best place to showcase your personality by filling them with one-of-a-kind pieces packed with sentiment and history."Some ideas for getting this laidback, layered style:Mix and matchA mix of decorating styles is great; just don't overload the space, says HGTV host Sabrina Soto, a judge on this season's "HGTV Star.""Mixing in multiple elements can create an overwhelming and cluttered interior," Soto says, so "avoid overaccessorizing with knickknacks and space holders."She also advises against "grouping a certain style in one corner and the other style in another."Go ahead and combine two plaid chairs with a floral sofa. Kyle Schuneman, author of "The First Apartment Book: Cool Design for Small Spaces" (Potter Style, 2012), recommends mixing the scale of the patterns but keeping the scale of the furniture the same."So if you have a small sofa, keep the side chairs in that same scale. Then with the fabric in the room, for instance, use a small pinstripe, a medium plaid and a large graphic pattern as your three mix-ins. By keeping the patterns in a different scale, it keeps it from getting too busy and fighting each other for attention," he says. Color can also help one piece stand out: Paint an old wooden dresser a bold yellow, Schuneman says, then "keep the other pieces muted with just textures of metals and woods."And even when styles are drastically different, Soto says, "consider their color. If they're in the same color range, they'll fit perfectly together in one space."Flea-market findsSecond homes are often in small towns with weekend flea markets and antique shops. Flynn suggests mixing your own family hand-me-downs (your grandfather's old reading chair, say, or your dad's collection of "Hardy Boys" books, or a painting made by a relative) with flea-market purchases that connect with your personal history.For the kitchen of his weekend home in the Hollywood Hills, for instance, Flynn bought a vintage Circle K convenience-store sign at the Rose Bowl Flea Market. "I grew up in Fort Lauderdale, Fla., and spent a ton of time at the Circle K on weekends" getting ready for the beach, he says. "Every time I walk past the dining room, I kind of feel that carefree, beachy feeling all over again."A vintage item picked up for $5 can sometimes become the star of a room."My living room walls are completely covered with flea-market art picked up for next to nothing. Best part? Everyone always asks me what gallery I source all of my amazing art from," Flynn says.Blending old with new can be fun: "In my bedroom, I updated the floors with white vinyl plank and custom window treatments made from high-end Schumacher chinoiserie fabric. But the 1960s bubble chair and a 1970s wood dresser picked up for $60 at the Long Beach Flea Market are vintage," Flynn says. "The blend helps keep everything somewhat fresh and current, but not feeling like I got this all from the same catalog."Maximize small roomsSecond homes are often small, so decorate with that in mind."A cluttered space will always appear smaller," Soto says, so keep a smaller room clean. She suggests hanging shelves to keep items off the floor, and using mirrors to make rooms appear larger and brighter."Incorporate pieces with dual purpose, such as storage ottomans which can act as seating while concealing your clutter," she says. "Stacking chairs or nesting tables are great too."Schuneman agrees: "Usually with a second home you use it for relaxation and entertaining, so keep the pieces double-duty. Benches that can work as side tables, poufs that can work as extra seating, and a desk that can also work as a bar or buffet at night."Flynn's second home doesn't have any guest bedrooms, but he often hosts friends there. Ceiling-mounted draperies in the dining room let him partition it off and use it as a sleeping space for guests.Local flavorSchuneman suggests filling your weekend home with family photos but buying the frames locally -- maybe something made by an artist or craftsman."Also, bringing in local flora like driftwood or maybe a stump or natural elements that bring the outside in really makes it feel like a destination home," he says, "and for free."If the home has a nice view of mountains or water, Flynn suggests using a monochromatic palette inside to draw the eye outside. If there is no view, it's "ideal for going crazy with color," he says."Since I love the all-American aesthetic, I painted my walls and ceilings a deep shade of slate blue, then used tons of red and white as accents."Don't have a second home?"You don't have to actually have a second home to create that warm, well-worn, welcoming feeling" in your main home, Flynn says. "It's all about a great edit, and just making a space that makes you forget about work, forget about bills and forget about anything else except rest and relaxation."