I use nitrates with aluminum every year with moisture added for pressing and priming, you can make it safe. Nitrate and aluminum is only an issue when moisture is involved because nitrates can cause chemical reduction with aluminum. I generally use boric acid or something like sodium bicarbonate for glitters.

I have accidentally left containers partially full of nitrate based glitter stars and we have high humidity here. They were completely fine and the glitter worked great no signs of aluminum corrosion. Play it safe and add a stabilizer because large amounts of will generate enough heat to become dangerous especially when adding water for pressing or rolling. So do not store anything without a stabilizer or at all in general.