This article is from the Juggling FAQ, by Juggling Information Service email@example.com with numerous contributions by others.
Mills Mess is, as George Gillson puts it, a "mind boggling pattern
of circling balls, crossing and uncrossing hands, and unexpected
catches." It is a very appealing pattern to learn and perform.
You can perform it with three, four, and, for those who are not of
this world, five balls.
On the JIS, move to the 'Juggling Help' section, and you will find
several pertinent titles.
There are also titles on two and three ball tricks, bounce
juggling, showering, and tricks with showers, among others. You
will also find help for clubs, passing, rings, torches, numbers,
siteswaps, essays, and other circus arts.