Train Engine bed

My toddler son LOVES trains.  There is one at the local zoo and he always wants to see the animals ride it.  I decided to create his fantasy for his big boy bed to entice him to leave the crib.  Here is the train engine bed I built for my son.  I saw a similar bed online for over $2000.  The front opens for storage. I then also completed the train carrying zoo animals on the wall behind.  The train cars are all wood bolted to the walls. I painted the sky on the walls and ceiling, and included clouds (some are shaped, you can see a sailboat and turtle behind the giraffe).  I created the entire room (including painted ceiling and walls) for about $600.  I had to commission all of the circle cuts as I did not have access to a router which was at least half of my cost (and don't know how else to do such large circles).  Otherwise, project materials would have been about $300.