Does anyone know source for window chaulk? Paint the washes from a store front window easily. My other thought is perhaps they make a screw on sponge top for acrylic bottles.
I have seen glass chalk at Hobby Lobby and Michaels. If I remember correctly, it was near all the "fancy" acrylic tubes and paint brushes (I just use the good old acrylic craft paint!) I thought it was pretty pricey. I am thinking like $6 or more for one color. I am sure there must be a recipe to make your own somewhere! I'll have to look :)
IF you were to come across a recipe for it that would be great, I found some on line but they didnt have a very extensive color palet. I paid like 3.00 a bottle