You can see some stuff that is possible with the LR, but really, it is very hard to tell how much effort, and scrap wood were needed.
They say you shouldn’t leave your 3D printer unattended, but you definitely should never leave a CNC. The routers are about 600W, and they are operating very close to their limits, so if the but gets buried, it will have no idea and just grind away steel on wood, which will make a fire in a few moments. You will have less than a minute to stop things before you end up with an uncontrolled fire. It sounds like you want to watch it anyway, but just to be perfectly clear.
This is what I think is the ideal project. Creating high precision 3D furniture from sheet goods. Etching/carving patterns is also a great application (again, as long as you aren’t doing huge carves).
But, I may be underestimating your interest. Just know that some of the projects in that gallery are dozens of hours of cuts, and you have a high likelyhood of making fails. And then at the end, you still usually need to sand and finish the projects.