On Instructables, DIYHacksAndHowTos has a great method for separating a cheap stapler and sticking magnets on both halves, enabling you to center-staple booklets and the like. Every year or two, I do something zine-like that requires this sort of thing, and I always end up wasting money on a long-reach stapler that's always lost by the time the next project rolls around. (Don't get me wrong, long-reach staplers are awesome, but if you only need to do booklets once every year or two, they're a lot of investment). This is what I'll do next time (and as a bonus, it'll be great for kid craft projects where we want to use a staple in th center of a large sheet of paper).
One limitation of a typical office stapler is that it only lets you staple about 3 1/2" into the paper. This isn't enough for a lot of projects. If you want to put together your own comic book or a large banner, you are usually stuck stapling your project onto a piece of cardboard or carpet and then bending the legs of the staple by hand. They do sell extra long staplers or staplers with swivel heads but they still have their limitations.
A better option would be to make a stapler with a detachable base. The base would be positioned under the paper and aligned to the top half of the stapler with magnets. This would allow you to staple any area of a project regardless of location. So in this project, I am going to show you how to convert a standard stapler into a two part magnetic stapler.