Tilt Lenses are an expensive proposition to most photographers and what if you want to do macro work with one? I have seen plenty of DIY tilt lens gizmos such as these made from different pluming parts:http://www.instructables.com/id/DIY-Tilt-Shift-DSLR-Camera-Lens/ and http://hackaday.com/2009/07/28/making-a-tilt-shift-lens/
Well neither of these do what I really wanted. I wanted to use my existing [...]

I have written about do it yourself extension tubes before, but I came across this instructable where user BorisKafka basically built themselves a macro lens using a redbull can as a extension tube.  It is an extremely easy instructable.  They took a camera body cap and cut a hole in it.  They then glued a [...]

First of all lets just answer the question:
“What is an Extension Tube, and why do I want one?”
Basically an extension tube moves your lens away from the camera sensor to close the focus creating better magnification.  If you would like to know more I would suggest reading: http://en.wikipedia.org/wiki/Extension_tube
Typical Looking Extension Tube:

Since Reverse Macro Lens Photography [...]