Boilerplate? Need help adding the same text to end of each post

I have a question. I frequently do content writing for a number of my clients and I always have to put a blurb with links in at the bottom of each post. Its the same thing but I never remember it. I would love to have a boilerplate set that I can add to any post and it automatically shows up or even a bracketed code. Does anyone know of any extension from MainWP that will do that? Or any WordPress one?

@theonmedia Would the MainWP Boilerplate Extension work for your situation?