I have had this little midi loop generator on my home laptop for several years and have toyed with it to create simple loops that I can then drop into Garage Band or just enjoy as-is. David does quite a bit of audio-video work with his students and I suggested that he check out the Java applet Automatous Monk to add some quirky goodness to the mix.

(As an unexpected bonus, the site now also lists an artsy little applet called Seurat which does some cool things to image files, too.)

Automatous Monk: Music (and art) from simple programs