Milkcrate is an interesting site/project, maintained by Sebastian Tomczak, that explores making music with minimal source materials:

Milkcrate is not a band or a particular group of people. Milkcrate adds a further set of constraints of space, time and materials to create music within.
The rules…

The objective of milkcrate is to write, record and produce as much [...]

 

 Singapura - uses only glass as source material [0:58m]: Play Now | Play in Popup | Download

 

 Dawn Bells - uses only a blank sheet of paper as source material: Play Now | Play in Popup | Download

 

 Of Daedalus, Part A - Empty, solo milkcrate: Play Now | Play in Popup | Download

The Second International Conference on Music and Minimalism will occur September 2-6, 2009, at the University of Missouri at Kansas City, directed by Kyle Gann and David McIntire.
All scholars in this area are invited to submit papers. Relevant topics include, but are not limited to, the following:

both American and European (and other) minimalist music;
early [...]

In this classic clip, South Park Elementary presents the happy, non-offensive, non-denominational school play, with compositions by Philip Glass.
Bogus, but funny!