Great idea with the frosting bag. Little tip- when mixing dry materials with wet (even just sugar and water), always start with your wet. If you just start pouring water onto a dry powder, it tends to clump. It's best to start with a bit of water, and add your dry powder gradually while stirring, then add your remaining water.
I am so gonna be using this method for applying snow. I already have been doing my snow mix in a near identical way but the application process is genius.
