Nice topic. Agreed with most of the inputs above. I have upgraded the following:
1) My brother's Thinkpad L460 (I think that's the model- 2017/18, upgraded in 2020)
-an additional 4GB RAM (Crucial Basics, I think) totaling to 8GB and
-a BX500 400 GB SATA SSD
2) My Predator H300 (2017/8)...