DIY Pull-up Bar

A few years ago I bought a pull-up bar from Champs for around $25. The beauty of this particular bar is that you don't need to screw it in or fasten it in any way. I dangles off the trim and gravity and leverage keep it securely in place. A buddy of mine was recently looking for something similar, but most such bars now seem to be $50 and up. Fortunately, you can build your own pull-up bar for around $30 using off-the-shelf threaded pipe (scroll down to "Doorway Chinup Bar").