What should I do with old computers?

There is a moment when a computer pass the point of no sale and enters the recycle category.
I'm curious to find out when this applies since I have accumulated a lot of computers over the years, I would also like to know how Wendell and Logan deals with this; do you save computers and parts indefinitely or is there a point when it gets randomly thrown at people ?

Best Regards
 WierdMind

If they can run modern programs, I would consider donating them. If you have an old i486, I would hold on to it. Who knows, maybe you could keep everything and look back on the evolution of personal computing one day.

use them as file servers or put PFsense on them

Refurb and donate to somewhere local that needs em.