An easy DIY headboard option is to use solid pine doors with added trim. Paint the doors to coordinate with the bedding.
Also on these boards
It looks like the headboards are painted on the wall, not sure if I love that...I definitely like the idea of putting the boys' initials on the pillows.
I have lots of windows!!! BHG Two single window panels are the perfect alternative to an ordinary headboard. To get this look, find windows that measure approximately the width of your mattress. Remove the glass and install fiberboard or thin plywood over the back for safety. Cut fabric to fit each section and secure it in place with spray adhesive.
Map Quest It's easy and cheap to transform an old headboard into an unexpected treasure. Use simple decoupage techniques to add pages pulled from comic books, sheet music, or maps, as shown here. Brush on the decoupage medium -- find it in any crafts store -- add the papers, and allow the glue to dry. Then seal the piece with a coat of decoupage medium or clear varnish.