I remember Glass Wax. It was some type of liquid glass cleaner. You smeared it on the windows, let it dry and wiped it off. The problem was you ended up with all the white dust that got all over everything.
They really hit the jack pot when they offered Christmas stencils. I think you had to send for them. You put the stencil on the window and dabbed it with the Glass Wax which would make a white design on the window.
The beauty of it all was that all you had to do after the holidays was wipe it off and you ended up with sparkling clean windows, so they said.
I pestered my mom to let me have the stencils.
I remember stenciling snowflakes on every window of our house. Mom must have spent hours cleaning up the mess.
We also did it on our school windows as well. The poor janitor had to clean the windows..