At one point in time I went whole-hog on a 17 inch gaming laptop that I treated as basically a folding desktop, it's this absolutely garantuan ASUS thing where the entire rear of it is one huge heatsink unit for the CPU and GPU. If you intentionally consider it from the design perspective of something that will only be relocated once every few weeks or months, and is certainly a lot lighter than a mini-ITX desktop PC and traditional monitor, it can be a good solution. Sadly, the touchpad on it is nowhere near as well refined as the apple version.

I can comfortably leave that thing spending 8-12 hours to encode a HEVC/H265 codec 4K video without worrying about it melting down.