Some longer time TWiT fans may remember @Leo’s stint at turning all of the universe into paper clips… ? That was a fun little game. In that same vein, here is an older one you may not have encountered which is a great little time waster if you like these sorts of things… see if you can turn all of the universe into cookies. https://orteil.dashnet.org/cookieclicker/
Relatedly, are there other great “idle” sort of games other’s have idled away their days on?
This used to be one of my favorite games as a kid. Would play the Windows version, usually with just AI but sometimes also with my brother. They went to an online version a few years ago: http://www.gazillionaire.com/index.php
It’s still a good basic economics game (supply and demand; buy low, sell high; managing overhead costs, etc) and fun.