CONSTRUCTION SITE WITH BACKHOE When my little one turned 3, we made his room into a big-boy one with a construction theme, which he still loves. You can buy themed bedding, curtains, and border. We put the border halfway up -- white on the bottom and a blue/white color washing that looks like the sky above. I copied a section of the border and painted it BIG right over his bed, with a HUGE backhoe and a picture of him driving it. It looks like it's parked on his bed! --MarthaSue40

 MEN WORKING You can cover curtain rods with pvc pipes and then hang a tab-top valance from it. Mount pegboard on a wall and hang play tools from it. Decorate with "Men Working" signs and get flashing construction lights and a sawhorse construction easel. Hang a hard hat on the wall or tool belt ... the options are endless! Over the years we have added planes, trains, and automobiles! -- Tbear7840

 RACE CARS For a race-car theme, buy calendars with pictures of cars, tear them out and perhaps frame and matte a few of them horizontally. Then hang them around the wall as a border, killing two birds with one stone. -- lovemotherhood

 SPORTS CAR DISPLAY Instead of a border, where you would normally put a border (halfway down the wall) mount wooden wrap-around shelves all around the room (obviously working around the bed and dresser or desk), then decorate the shelves with model sports cars or other car memorabilia. Paint the shelves whatever color goes with the room. -- Pointbreeze

 TRAIN DEPOT I recently painted a wall mural of a train pulling into an old-fashioned train station. Under the mural I placed my child's Brio table. On the other side of the room I put cabinets for storage, each cabinet painted to resemble a building in a town (library, auto mechanics shop, pet shop). For the comforter, a blue-and-white ticking design to resemble an engineer's cap and overalls looks great, along with solid pillows with railroad crossing signs monogrammed on. -- mmathome65

 TRAIN TRACKS ON FLOOR A canvas floorcloth with train tracks painted on it works well, esp. when the background matches or fades into the carpet color. -- weisbatten

 TRAIN STICKERS ON MURAL I painted my son's bedroom with hills on the bottom half and sky with clouds on the top half. I painted a train track and bought removable train stickers to go on the tracks. He loved moving the trains around! I also got free samples of wallpaper and borders (anything appropriate to the room) and cut out pieces to paste on the walls. I made one area a construction zone with a hill made out of cut-out rocks and vehicles. Cutting out these pieces was easier than painting them, and I could do it while he was sleeping. His friends all thought he had the coolest room. We have since moved and miss that room a lot. -- crazy4mykids2

 PERSONALIZED ROAD SIGNS For a variation on road signs, paint very large yellow diamond shapes like those "slow" and "at work" signs, but stencil in your boys' names instead. You can do this on the wall at the head of each bed to designate which bed belongs to each boy. -- MNMomx4