While I was watching the live tiny gaming pc build today, it hit me when Linus said he wants some kind of tin foil water bag to cool a macbook that I've seen something from Taobao ( ͡° ͜ʖ ͡°) might achieve that.
Here's the link, basically it's a giant water block sitting underneath the laptop, though i wonder if the thermal pad will make a mess for long term use:
https://item.taobao.com/item.htm?spm=a1z0d.6639537.1997196601.3.2c477484LP7umZ&id=583937997027