This would take lots of hacking -- unlocking bios and the like and you would run the risk of bricking the laptop and you would probably need to work with a local computer recycler or someone else with lots of cards hanging around but this is a hail mary option -- put an desktop GPU in your laptop:

Discusses success and failures: https://www.youtube.com/watch?v=GDyL2tPyXFA

How to:

https://www.youtube.com/watch?v=aM3D3cZmqn0

But you would need on of those bed table things -- not actually on your lap.