I propose that we jointly craft and refine a Mathematica.SE package of commonly used functions. I noticed that many answers on StackOverflow were in essence recreating the same functions, and it would be nice to use new library functions without having to find and reference the post they originated from.
This way we could simply start code with e.g. Needs["SEpack.m"] and go from there. It would of course be good to explain this is a site FAQ.