Artwork is one of the easiest ways to personalize your bedroom, as it's an extremely personal form of expression -- both for the artist and the buyer. Choose paintings, sculptures, sketches or photographs that speak to you. "A unique painting or two sitting inside a vintage fireplace mantel is a pretty typical look in my bedroom," shares Hill. Flea markets, yard sales and thrift stores are great places to find affordable treasures that'll make all the difference in your bedroom.