Well, it's sand anyways. Glitter is annoying because it's highly visible so you're constantly reminded of it, but sand is just like any sort of dust. It's also

Well, it's sand anyways. Glitter is annoying because it's highly visible so you're constantly reminded of it, but sand is just like any sort of dust. It's also a bunch of very thin and tiny sheets, so it adheres to surfaces formidably. Of course, you do your own "annoyance assessment", but a non-perishable, hydrophobic, heavy and visually unremarkable powder has a pretty good value in terms of unit of fun per unit of annoying in my book. Tidier than giving a kid a cookie.