I'm at the point in my emacs journey where I'm looking for places in my day-to-day editing that can be made more efficient by writing code that writes that code

I'm at the point in my emacs journey where I'm looking for places in my day-to-day editing that can be made more efficient by writing code that writes that code. I have implemented some helpful macros, but I think I would benefit a lot from reading macros written by a more experienced emacs programmer.