The problem that seems to inevitable come up, at least for me, is that once I do a "cool little on-off-er" it seems to be desired more than once. "Hey, I heard you did this little tool for so-and-so. I have to do ALMOST exactly the same thing, but need to point here....", then another, and another......

So what was once intended to be a one-off script gets a life of its own without my intent. Then I have to go back and start making it a more real critter.