“How do you make a kids room into a tween room”? Color. I added hot pink to Teddy’s room, and a shocking green rug to take my 10 year old room from a kiddie room into a tween room. I bought her a cool modern lamp from Crate and Barrel , some art from an artist on the street and she’s ready to get creative. For Sea, I painted her walls a soft purple. We put her painted surf board up, some of her art work, a cowhide rug from Williams Sonoma home outlet, a colorful glass Crate and Barrel lamp, and her butterfly collection. Her room looks cool, but still has that youthful touch. Inspire your children, don’t foster obsessions for them to be adults. Coloring and decorating with what you love makes any room reflect the person. Decorate with what you love.