I've found them to be especially useful to companies that aren't interested in staying in business. The problem is, they almost always have enough of their own red beads, and aren't likely to be interested in yours.
For example, I have pointed out that maybe the beads are used as ball bearings. As a process fix, one audience member once said "get a can of white spray paint". Now, I love that idea. But if you think about it - if the purpose of the beads was to be ball bearings, overspraying all the beads with white spray paint would ruin all of them!
There are hazards to not knowing what the customer will do with your product.