I really consider this article essential reading for anyone who is or wants to organize
Big Strikes and the sabotage of the labor movement
https://organizing.work/2020/11/big-strikes-and-the-sabotage-of-the-labor-movement/
Marianne Garneau challenges the current focus on bringing back large strikes, arguing that the wellspring of labor militancy historically has been worker-led action on the shopfloor.
This takes a look at the history of labor militancy on scales smaller than strikes, and advocates for guerilla labor actions as a solid foundation for larger actions like strike.
It's a really good look at practical examples from history of how to make gains at work even when you are between contracts or maybe even don't have a union.