Here's how I made this Pallet Bed Railing:
First, I used a pallet stringer board and cut it to length - most of the length of the bed. Next, I sanded it smooth and rounded the edge where my little one would enter and exit the bed. Then I cut two stringer boards in half, and then to the height, I wanted the railing at. I cut small pieces of another stringer to the length of the bottom of the railing board to the bed frame (this will obviously vary based on your child's bed and height requirements, etc.). Next, I "sandwiched" the small length of stringer between the top railing board and the two deck board pieces that were placed on either side of the top railing. Finally, I used screws to fasten everything together, ensuring that no fastener tips protruded.
Finishing This simple Pallet Bed Railing:
I sanded all the pieces thoroughly to remove any splinters or rough edges. Then I applied a polyurethane to seal it all up. It was an easy project, but will provide a lot of safety for my little one. I think this is a good idea for little ones transitioning out of a crib and into their beds, too. :)