This is a pretty cool little gimmick. I mainly use it to produce glitter. i played around with some
of the other effects that are demonstrated in the video. Some of them are pretty cool.
My
only real complaint is that they can wear out. I won't go into any more deatail or I'll be tipping
the method, but it can break over time. One of mine is about to do that but I've had it for over a
year. The good news is you get two of them.
It's a simple but pretty neat idea though.