LilyPad Reed Switch Hookup Guide
Resources and Going Further
Now that you've tried out a simple circuit, you can try integrating the reed switch into a more complex assembly, triggering a reaction from an MP3 board, a microcontroller, or something else entirely! A reed switch is a great, simple, inexpensive way to react to proximity, so it's very versatile.
Here are some good places to start:
Need some more E-Textiles action? Check out these other great SparkFun Tutorials: