Thanks for the welcome!
I am retired, but was in the US Navy "Sea Bees" for many years, then as a collage assistant professor, followed by the automotive industry testing all the safety devices you are just now seeing on the market. I am including a Polish PN1-5 utility trailer as an example...
It is in 1/25th scale with working tailgate, jack-stands, spare carrier and wheels. The top is not "tied down as I wanted the option to make it removable. It is all card and paper, copper and aluminum wire, and part of an old shirt. Home made acrylic OD green and air-brushed.
Right now, I am in the process of a Scammell Pioneer SV2S, but am having a hard time finding details of some of the construction details. So I will build parts then rebuild them when I find better details. Just recently found a good view of the Gardner 6LW, so restarted ( again)! I'll post a pic when she is finally complete!