I have to admit that while I LOVE Make Magazine, I never tried one of the projects until now. I made this:

which is a sensor interface that communicates with the computer via MIDI. This makes it ideal for working with MaxMSP and that part of the project was trivial. The sensor hanging off the left side is a photocell which is configured to send control change messages via MIDI.

Hopefully this will be the first of many more completed Make Projects.