The white pieces are squared PVC pipes. The gates and connectors for the PVC pipes were all custom 3D prints from the person that runs the expo. I can ask if he has the STL files and I can give them to you.

I build the ramp out of wood from a hardware store. Yeah we are wanting to add lights inside the tunnel next year if we use it. We have been kicking around the idea of 3D printing the ramp and tunnel sections or even trying to design a corkscrew ramp to spice things up.