I still have the Forrest Mims III Radio Shack "555 Engineer's Mini-Notebook" somewhere in my basement. And rumor has it that Sammy Hagar can't drive 555 because his car just isn't fast enough!
I have a paper copy of "IC 555 projects" kicking around on my bookshelf still!
PDF version here https://worldradiohistory.com/UK/Bernards-And-Babani/Babani/...
Also consider the IC Timer Cookbook by Walter G. Jung.
The Mims books are fantastic. As a kid I collected every mini notebook and the green Radio Shack "Getting Started in Electronics." They were my intro to electronics along with the Radio Shack kits.