The Mills mess (named after one of its originators, Steve Mills) is a symmetrical pattern performed with any number of props greater than or equal to three, in which the arms cross and uncross throwing the props from toward the centre of the pattern in groups of three.
The Mills puzzle (named after its originator, Steve Mills) is a symmetrical design that can be executed with three or more objects, where the arms intersect and diverge, launching the props towards the center in sets of three.